的 United States Citizenship and 移民 Services (USCIS) requires that American companies sponsor noncitizens. Companies who are having trouble filling roles in their business often turn to sponsoring a nonim移民 worker by use of the H1B Visa. 为了让公司资助一个工人, they must petition on behalf of the worker for them to obtain their H1B visa. 的 position that they’re offering must be in a “specialty occupation.” This means that the job requires the use of specialized knowledge in order to successfully carry out the duties of the position.  Roles for a specialty occupation include but are not limited to: 会计师 架构师 商业人士 牙医 工程师 金融分析师 外国法律顾问 卫生保健工作者 IT/Computer professionals 记者和编辑 律师 管理顾问 市场研究分析师 护士 医生  心理学家 科学家们 外科医生 系统分析员 老师 技术出版物的作家 大学教授  This is not a comprehensive list of the occupations that offer H1B visas. As long as the position meets the criteria for a specialty occupation, 他们可以通过H1B签证担保外国公民.