I'm not that optimistic anymore especially with a comment like that. Even if you know nothing about the immigration experience I think you'd have to ignore a lot for that to even be a question. Nobody goes through that much hardship to get to a place like the US and then goes like "k bye! I'm vacationing in Europe and doing it all over again" I hope they were enlightened at some point but I've also ran into well traveled people with the same mindset.