The Immigration and Nationality Act (INA) established in section 212(e) that participants in the J-1 program would (somtimes) be required reside for two years in their home country after completing a J program. This rule is known as "212(e)", "home residence rule" and "return residence rule".

Individuals who are subject to 212(e) are ineligible for certain other visa classifications (H-1B, L-1, K-1) or permanent residence (greencard) status, until they either have satisfied 212(e) by residing in the home country for an aggregate of 2 years (2 x 365 days) or by receiving USCIS approval of a request to waive the requirement. 

Not all exchange visitors are subject to 212(e) (see below for details).