Employers that recruit foreign workers to fill a position in the United States must ensure that the individual has obtained authorization to work in the U.S. to satisfy immigration laws.

In appropriate circumstances, this can be accomplished by the employer sponsoring, and obtaining approval from the United States Citizenship and Immigration Service (USCIS) for, a petition for a nonimmigrant visa on behalf of the individual. In some cases, prior approval of the USCIS isn't required and the individual must merely present himself to an immigration officer at the border with appropriate documentation to gain admission to the United States and authorization to work for an employer.