The issue then is, what happens if you don't complete your training with them? For any reason: eg. you find out the school is dodgy/overcharging you, the CFII is a maniac/drill sergeant, they have no aircraft available or you just plain feel unsafe. It would be really easy to get over there and find all the promises simply evaporate and you get kicked out of the country as an "illegal alien"
One should absolutely go check out an operation before signing up... One should also seek contracts rather than promises, which are on offer in the US.