太多的人为这个东西烦恼，太多的做了homework的J1也会忍不住重复发文问一些常问的问
题。特开此贴抛砖，希望能为以后的新人节省时间。
美国政府的原文： http://travel.state.gov/visa/temp/types/types_1267.html#12
Two-Year Foreign Residency Requirement
An exchange visitor is subject to INA 212(e) requirement, if the following
conditions exist:
The program in which the exchange visitor was participating was financed in
whole or in part directly or indirectly by the United States government or
the
government of the exchange visitor's nationality or last residence;
The exch
