It is their right to be there. They do not have to show appreciation and the current government should never be one deciding these what is appreciation. Bowing to authority is exactly the opposite of what education is about.

It depends on which state is going to imprison you. Being in prison in the U.S. is worse than living out of prison in Chian or Russia.

Willing to be a martyr does not mean that he wouldn't try to avoid it.