NO flight training under Category 1, 2, or 3 (49 CFR 1552.3) should be conducted for ANY alien who has entered the U.S. in B-1 or B-2 (visitor's) status. It is a violation of the status under which the non-immigrant visitor entered the U.S.
Thanks for the heads up. I'm in the process of getting a visa to the US to get a 737 initial TR (Category 1) and was thinking I could get a B-1 B-2 visa and get away with it.
Now i know better. Very useful thread this is