221g, security or name checks

lalalala

Registered Users (C)
forgive my ignorance , the people who are getting stuck in Canada or India during H1b processing are getting stuck
1. because of name check, security issue or just by luck any one can get stuck
2. what is this 221 or administrative processing
3. if by chance one is stuck on Canada or India for H1b revalidation or new H1b transfer , is it okay to come back to US on AP, any future implecations Especailly if this happens in US consulate in India
 
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