Exchange programs allow visitors to arrive in the US with J-1 and J-2 visas in order to exchange in cultural and professional exchanges. In many cases, such programs are a great opportunity both for foreign nationals and US residents to learn about other cultures and to develop skills. Holders of J-1 and J-2 visas can remain in the US for the term of the exchange program and must then leave to their home countries for two years before they can come back to the US. If a former J-1 and J-2 visa holder wishes to return before this two year period, they need to file USCIS form I-612 (Application for Waiver of the Foreign Residence Requirement (under Section 212(e) of the Immigration and Nationality Act, as Amended) to have this restriction removed.