| AAO | Administrative Appeals Office (formerly the Administrative Appeals Unit (AAU)) 行政上诉办公室（旧名：行政上诉部） |
| AC | Associate Commissioner (of INS) 助理专员（属于移民归化局） |
| AC21 | 美国21世纪竞争力法案（2000年） |
| ACE | Accelerated Citizen Examination 加速公民考试 |
| ACPA | Assistant Chief Patrol Agent 助理首席巡逻官 |
| ACWIA | American Competitiveness and Workforce Improvement Act of 1998 美国竞争力及劳工促进法（1998年） |
| AD | Approval Date 批准日期 |
| ADD | Assistant District Director. Also, ADDE (Examinations); ADDI (Investigations); ADDM (Management) 助理区域主管，也称ADDE（考试），ADDI（调查），ADDM（管理） |
| ADIT | Alien Documentation, Identification, and Telecommunications system (ADIT photos are no longer used) 外籍人士文件、身份、通信系统（ADIT照片已不再使用） |
| AEDPA | Antiterrorism and Effective Death Penalty Act of 1996 反对恐怖主义与有效死刑法案（1996年） |
| AFACS | A-Files Accountability and Control System 外籍人士档案责任及控制系统 |
| AFAIK | As Far As I Know 据我所知 |
| A-File | Alien File 外籍人士档案 |
| AG | Attorney General of the United States 美国总检察长（司法部长） |
| AILA | American Immigration Lawyers Association 美国移民律师协会 |
| AILF | American Immigration Law Foundation 美国移民法律基金会 |
| ALC | Alien Labor Certification 外籍劳工证书 |
| ALJ | Administrative Law Judge 行政法律法官 |
| AMIS | Asset Management Information System 资产管理信息系统 |
| A-Number | Alien Number 外籍人注册号 |
| AO | 1. Administrative Officer 行政官员 2. Asylum Officer 庇护官员 3. Adjudication Officer 裁判官员 |
| AOC | Asylum Officer Corps 庇护官员团 |
| AOIC | Assistant Officer-in-Charge 助理主管官员 |
| AOS | 1. Adjustment of Status 调整身份（USCIS） 2. Affidavit of Support 经济担保书(美国国务院) |
| ARC | Alien Registration Card (即永久居民卡或绿卡) |
| A/S | Adjustment of Status 身份调整 |
| AP | 1. Advance Parole 提前离境许可 2. Administrative Processing 行政处理 |
| AR | Administrative Review 行政审核 |
| ASC | Application Support Center 申请支持中心(录入指纹的地方) |
| ASVI | Alien Status Verification Index 外籍身份验证索引 |
| AVLOS | Automated Visa Lookout System 自动签证验证系统 |
| AWO | Affirmance Without Opinion 无异议确认 |
| BALCA | Board of Alien Labor Certification Appeals 外籍劳工认证委员会上诉 |
| BAR | Board of Appellate Review 上诉审核委员会 |
| BCA | Bureau of Consular Affairs 领事事务局 |
| BCC | I-186或I-586 非居民外国人过境卡 |
| BCIS | Bureau of Citizenship and Immigration Services 公民及移民服务局 (即现在的USCIS) |
| BEC | Backlog Elimination Center 积压消除中心 |
| BIA | Board of Immigration Appeals 移民上诉委员会 |
| Biometrics | 生物识别信息，包括指纹、签字、照片以及其它用于验证个人身份信息的材料 |
| BIT | Bilateral Investment Treaty 双边投资条约 |
| BOP | Bureau of Prisons; also, Burden of Proof 监狱管理局或举证责任 |
| BP | Border Patrol 边境巡逻队 |
| CAT | United Nations Convention Against Torture and Other Cruel, Inhumane, or Degrading Treatment or Punishment 联合国禁止酷刑和其他残忍、不人道或有辱人格的待遇或处罚公约 |
| CBP | (U.S.) Customs and Border Protection 美国海关及边境保护局 |
| CCA | Child Citizenship Act 儿童公民法案 |
| CFR | Code of Federal Regulations 联邦监管代码 |
| CGFNS | Commission on Graduates of Foreign Nursing Schools 外国护校毕业生委员会 |
| CIJ | Chief Immigration Judge 主任移民法官 |
| CIS | 1. Central Index System 中央索引系统 2. Citizenship and Immigration Services 公民与移民服务局（USCIS） 3. Center for Immigration Studies 移民研究中心（反移民智库） |
| CLAIMS | Computer Linked Application Information Management System 计算机联网申请信息管理系统 |
| CLN | Certificate of Loss of Nationality 放弃国籍证明书 |
| CMT | Crime of Moral Turpitude 道德败坏罪（又称CIMT） |
| CO | 1. Certifying Officer 认证官员(劳工部) 2. Consulate Officer 领事官员 |
| COA | Class of Admission 入境类别 |
| COB | Country of Birth 出生国家 |
| COC | Country of Citizenship 公民或国籍 |
| ConOff | Consular Officer 领事官员 |
| CORAP | Central Office of Refugee, Asylum, and Parole 难民、庇护和假释总办公处 |
| COS | Change of Status 身份转换 |
| CP | Consular Processing 领事处理 |
| CPR | Conditional Permanent Resident 有条件永久居民 |
| CPT | Curricular Practical Training 课程实践训练 |
| CR | Conditional Resident 有条件居民 |
| C/S | Change of Status 身份转换 |
| CSC | California Service Center 加利福尼亚服务中心 |
| CSPA | Child Status Protection Act 儿童身份保护法案 |
| CUSA | Citizenship U.S.A. 美国公民 |
| CWOP | Cancelled WithOut Prejudice 无偏见取消（注销签证盖章） |
| D&D | Detention and Deportation 居留及驱逐 |
| DAO | 1. District Adjudication Officer 地区裁决法官 2. Deputy Adjudications Officer 副裁判官 |
| DCF | Direct Consular Filing 直接领事馆提交 |
| DCPA | Deputy Chief Patrol Agent 副首席巡逻官 |
| DD | District Director 地区主管 |
| DDD | Deputy District Director 地区副主管 |
| DED | Deferred Enforced Departure 强制离境延期 |
| DFS | Designated Fingerprint Service 指定指纹采集服务 |
| DHS | Department of Homeland Security 国土安全部 |
| DO | 1. District Office 地区办事处 2. Deportation Officer 驱逐出境主管官员 |
| DOB | Date of Birth 出生日期 |
| DOD | Date of Defense 辩护日期 |
| DOE | Date of Entry 入境日期 |
| DOJ | Department of Justice 司法部 |
| DOL | Department of Labor 劳工部 |
| DORA | Dallas Office Rapid Adjustment of Status 达拉斯快速身份调整办事处 |
| DOS | Department of State 美国国务院 |
| DOT | Dictionary of Occupational Titles 职业名称目录 |
| D/S | Duration of Status 身份有效期 |
| DSO | Designated School Official 指定学校官员 |
| DV | Diversity Visa Lottery Program 多样化签证抽签计划 |
| EAC | Eastern Adjudication Center (now Vermont Service Center)东部管辖中心（目前为维蒙特服务中心） |
| EAD | Employment Authorization Document (I-688B) 工作授权证或工卡 |
| EAJA | Equal Access to Justice Act 司法平等法案 |
| ENFORCE | Enforcement Case Tracking System 执法案件追踪系统 |
| EOIR | Executive Office for Immigration Review 移民审查执行办公室 |
| EOS | Extension of Stay 延期居留 |
| ER | Expedited Removal 快速递解出境 |
| E/S | Extension of Status or Stay 身份或居留延期 |
| ETA | Employment and Training Administration 就业与培训管理局 |
| EVD | Extended Voluntary Departure 自愿离境延期 |
| EVL | Employment Verification Letter 雇佣验证信 |
| EWI | Entry Without Inspection 未经检查入境 |
| EWIC | Essential Worker Immigration Coalition 重要劳工移民联盟 |
| FAM | Foreign Affairs Manual 外国事务手册 |
| FAQ | Frequently Asked Questions 常见问题 |
| FARES | Fees and Applications Receipt and Entry System 费用与申请收据及录入系统 |
| FCCPT | Foreign Credentialing Commission on Physical Therapy 外国物理治疗认证委员会 |
| FCN | Treaty of Friendship, Commerce, and Navigation 友谊、贸易及航行条约 |
| FCO | File Control Office档案控制办公室 |
| FED. REG. | Federal Register 联邦注册 |
| FGM | Female Genital Mutilation 切除女性外阴 |
| FMG | Foreign Medical Graduate 外国医学毕业生 |
| FOIA | Freedom of Information Act 信息自由法案 |
| FP | Fingerprinting 指纹 |
| FR | Federal Register 联邦登记 |
| FSN | Foreign Service National 美国国务院外事处 |
| FSO | Foreign Service Officer 外交官 |
| FTA | Free Trade Agreement 自由贸易协定 |
| FTO | Free Trade Officer 自由贸易主管官员 |
| GAL | General Administration Letter of DOL 劳工部行政主管信 |
| GC | Green Card 绿卡 |
| GEMS | General Counsel Management System 法律顾问管理系统 |
| GPO | Government Printing Office 美国政府出版局 |
| Green Card | Permanent Resident Card 永久居民卡 |
| HB | House Bill 众议院法案 |
| HQ | Headquarters 总部 |
| HR | House Report 众议院报告 |
| HRIFA | Haitian Refugee Immigration Fairness Act 海地难民移民公平法 |
| IA | Immigration Agent 移民代理 |
| IBIS | Interagency Border Inspection System 跨部门边境检查系统 |
| ICE | (U.S.) Immigration and Customs Enforcement 美国移民及海关执法处 |
| ICMS | Investigations Case Management System 案件调查管理系统 |
| ID | Interview Date 面试日期 |
| IDENT | Automated Fingerprint Identification System 自动指纹识别系统 |
| IE | Immigration Examiner 移民检查官 |
| iEAD | Interim EAD 临时工卡 |
| IFM | Inspector’s Field Manual 检验员现场手册 |
| IG | Inspector General 总检验官 |
| II | Immigration Inspector 移民检查官 |
| IIO | Immigration Information Officer 移民信息官 |
| IIRAIRA | Illegal Immigration Reform and Immigrant Responsibility Act of 1996 非法移民改革和移民责任法（又称IIRIRA） |
| IJ | Immigration Judge 移民法官 |
| ILT | AILA’s Immigration Law Today 美国移民律师协会现行移民法 |
| IMBRA | International Marriage Brokers Act 国籍婚介经纪人法案 |
| IMFA | Immigration Marriage Fraud Amendments Act 移民婚姻欺诈修正案 |
| IMHO | In My Humble Opinion 以我的愚见 |
| IMMACT90 | Immigration Act of 1990 移民法案 |
| IMO | In My Opinion 在我看来 |
| INA | Immigration and Nationality Act 移民与国际法案 |
| INFOPASS | 在线预约系统，可以预约当地移民局官员 |
| INS | Immigration and Naturalization Service 移民与入籍服务处（现在称USCIS） |
| INSERTS | Immigration and Naturalization Service Early Research and Transmittal System 移民与入籍早期研究与传输系统 |
| INSPASS | INS Passenger Accelerated Service System 旅客加速处理系统 |
| INTCA | Immigration and Nationality Technical Corrections Act of 1994 移民与国籍技术修正法案 |
| INV | Investigations 调查 |
| IO | Immigration Officer 移民官 |
| IR | 1. Interpreter Releases 翻译版本 2. Immediate Relative 直系亲属 |
| IRCA | Immigration Reform and Control Act of 1986 移民改革和控制法案 |
| IRS | International Revenue Service 美国国税局 |
| IVACS | Immigrant Visa Applicant Control System 移民签证申请人控制系统 |
| IV | Immigrant Visa 移民签证 |
| LAPR | Lawfully Admitted for Permanent Residence 以永久居民身份合法入境 |
| LAU | Legalization Appeals Unit 合法化上诉部门（属于INS） |
| LAW | Lawfully Authorized (or Admitted) Worker 合法劳工 |
| LCA | Labor Condition Application 劳工条件申请 |
| LC | Labor Certification 劳工证书 |
| LIFE | Legal Immigration and Family Equity Act of 2000 合法移民与家庭平等法案 |
| LIN | Northern Service Center (now Nebraska Service Center)北方服务中心（现为内布拉斯加服务中心） |
| LPR | Lawful Permanent Resident 永久居民（绿卡持有者） (Green Card holder) |
| LWOP | Leave WithOut Pay 未付费离开 |
| LUD | Last Update Date 最后更新日期 |
| MRD | Machine Readable Document 可机读文件 |
| MSC | Missouri Service Center (National Service Center) 密苏里服务中心 |
| MS&D | Maintenance of Status and Departure bond 维持身份和离境保证金 |
| MTINA | Miscellaneous and Technical Immigration and Nationality Act Amendments of 1991 杂项和技术移民与国籍法修正案 |
| MTR | Motion To Reopen 重开案件动议 |
| NACARA | Nicaraguan Adjustment and Central American Relief Act 尼加拉瓜调整与中美洲救济法 |
| NACS | Naturalization Automated Casework System 入籍自动化案例系统 |
| NAFTA | North American Free Trade Agreement 北美自由贸易协定 |
| NAILS | National Automated Immigration Lookout System 全国自动化移民查询系统 |
| NATZ | Naturalization 归化入籍 |
| NBC | National Benefits Center 国家福利中心 |
| NBCOTA | Noncitizen Benefit Clarification and Other Technical Amendments Act of 1998 非公民福利声明与其他技术修正案 |
| NBCOT | National Board for Certification of Occupational Therapists 认证职业治疗师国家委员会 |
| NOA | Notice of Action. 行动通知，向USCIS递交申请后收到的通知 |
| NOIF | Notice of Intent to Fine 罚款通知书 |
| NC | Name Check 姓名查询 |
| ND | Notice Date. 通知日期，即申请录入USCIS数据库的日期 |
| NG | NewsGroup 新闻组 |
| NIV | Nonimmigrant Visa 非移民签证 |
| NIW | National Interest Waiver 国家利益豁免 |
| NOF | Notice of Findings 调查结果通知 |
| NOID | Notice of Intent to Deny 拒绝意向通知 |
| NOIR | Notice of Intent to Revoke 撤销意向通知 |
| NRC | National Record Center 国家记录中心 |
| NSC | Nebraska Service Center 内布拉斯加服务中心 |
| NSEERS | National Security Entry Exit Registration System 国家安全出入境登记系统 |
| NTA | Notice to Appear 出席通知 |
| NVC | National Visa Center 国家签证中心 |
| OARS | Outlying Area Reporting Station 偏远地区报告站 |
| OCAHO | Office of the Chief Administrative Hearing Officer 总行政听证官办公室 |
| ODP | Orderly Departure Program 有序离开（越南）计划 |
| OES | Occupational Employment Statistics 职业就业统计 |
| OI | Operations Instructions 操作说明 |
| OIC | Officer-in-Charge 负责长官 |
| OIL | Office of Immigration Litigation of DOJ’s Civil Division 司法部民事庭移民诉讼办公室 |
| OMB | Office of Management and Budget 管理和预算办公室 |
| O*NET | Occupational Information Network 职业信息网 |
| ONO | Office of Naturalization Operations 归化入籍业务办公室（现为ISD） |
| OOH | Occupational Outlook Handbook (DOL) 职业查询手册（劳工部） |
| OPT | Optional Practical Training 可选实习培训 |
| O/S | Out of Status, or Overstay 身份过期或逾期逗留 |
| OSC | Order to Show Cause; also, Office of Special Counsel 为了显示原因，也作特别检察官办公室 |
| OTM | Other than Mexican 墨西哥以外 |
| PA | 1. (Border) Patrol Agent 边境巡逻员 2. Privacy Act 隐私法案 |
| PCC | Police Clearance Certificate 警方许可证明（无犯罪证明） |
| PD | Priority Date 优先日期 |
| PERM | Program Electronic Review Management System 项目电子审核管理系统 |
| PISS | Pre-INS Submission Syndrome 移民申请综合征 |
| PLC | Permanent Labor Certification 永久劳工证 |
| POE | Port of Entry 入境口岸 |
| PP | Premium Processing 加急处理 |
| PR | Permanent Residence 永久居民 |
| PRC | Permanent Resident Card 永久居民卡(绿卡) |
| PT | Practical Training 实习 |
| QDE | Qualified Designated Entity 有资格的指定团体 |
| RAW | Replenishment Agricultural Worker 补充农业工人 |
| RC | Regional Commissioner of USCIS 移民局地区专员 |
| RD | 1. Receipt Date. 接收日期，即USCIS收到申请的日期 2. Regional Director of USCIS 移民局地区主管 |
| RFE | Request for Evidence 要求提交证据 |
| RFI | Request for Initial Evidence 要求提交原始证据 |
| RN | Registered Nurse 注册护士 |
| RO | Responsible Officer of J- 1 Exchange Visitor Program 访问学者计划的责任官员 |
| ROW | Rest Of the World 世界其它地区 |
| RSC | Regional Service Center 区域服务中心 |
| RTD | Refugee Travel Document 难民旅行证 |
| RVIS | Remote Video Inspection System 远程视频监控系统 |
| SAO | Security Advisory Opinion 安保咨询建议 |
| SAO | Supervisory Adjudication Officer 监督裁判官员 |
| SA | Special Agent 特别专员 |
| SAW | Special Agricultural Worker 特殊农业工人 |
| SB | Senate Bill 参议院议案 |
| SC | Service Center 服务中心 |
| SDAO | Supervisory District Adjudications Officer 监管地区裁判官 |
| SENTRI | Secure Electronic Network for Travelers’ Rapid Inspection 旅客快速监控安保电子网络 |
| SEVIS | Student and Exchange Visitor Information System 学生及访问学者信息系统 |
| SIE | Supervisory Immigration Examiner 监督移民考官 |
| SII | Supervisory Immigration Inspector 监督移民检查官 |
| SIO | 1. Supervisory Immigration Officer;监督移民官 2. Special Inquiry Officer (former title for Immigration Judges)特别检察官（旧称移民法官） |
| SK | Specialized Knowledge for L Visa L签证专业知识 |
| SO | Significant Other 其它重要 |
| SRC | Southern Regional Center (now Texas Service Center)南方地区中心（现德克萨斯服务中心） |
| SR | Senate Report 参议院报告 |
| SVP | Specific Vocational Preparation 特别职业准备 |
| SSA | Social Security Administration 社会安全局 |
| SSN | Social Security Number 社安号码 |
| SWA | State Workforce Agency 州劳工局 |
| TA | Trial Attorney 庭审律师 |
| TAG | Technical Assistance Guide No. 656-Labor Certifications (1981) 劳工认证技术协助指南No. 656 |
| TAL | Technology Alert List 科技预警清单 |
| TCN | Third Country National 第3国国民 |
| TPCR | Transition Period Custody Rules 过渡期拘留规定 |
| TPS | Temporary Protected Status 临时保护状态 |
| TN | Trade NAFTA 北美自由贸易协定交易 |
| TSA | 运输安全局 |
| TSC | Texas Service Center德克萨斯服务中心 |
| TWOV | Transit Without Visa 无签证过境 |
| UNHCR | United Nations High Commissioner for Refugees 联合国难民高级专员 |
| UPL | Unauthorized Practice of Law 未授权法律实践（非法执业） |
| US-VISIT | United States Visitor and Immigrant Status Indicator Technology Program 美国游客及移民身份提示科技项目 |
| USA PATRIOT Act | Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism Act of 2001 反恐法案 |
| USC | 1. U.S. Code 美国代码 2. U.S Citizen 美国公民 |
| USCIS | U.S. Citizenship and Immigration Services (formerly INS)美国公民及移民服务局（旧称INS） |
| USCS | U.S. Customs Service 美国海关总署 |
| VAWA | Violence Against Women Act 防止暴力侵害妇女法案 |
| VB | Visa Bulletin 签证公告（移民排期表） |
| VD | Voluntary Departure 自愿离境 |
| VO | Visa Office 签证办事处 |
| VOLAG | Volunteer Agency 志愿专员 |
| VSC | Vermont Service Center 佛蒙特服务中心 |
| VTC | Video Teleconferencing 视频电话会议 |
| VWPP | Visa Waiver Pilot Program 免签证试点计划 |
| VWP | Visa Waiver Program 免签计划 |
| WAC | Western Adjudication Center (now California Service Center) 西部裁决中心（现为加利福尼亚服务中心） |
