Get real - a temp job (1-2 years) or miltary is OBVIOUSLY not in discussion here. These people WANT to live in the USA.
I am speaking of the "Americans" who have decided they do not want to live here but instead move to a different country to live - permanently!
And the problem with that is?
If you believe in freedom, then you can't possibly believe in punishing those who take free action and live elsewhere.
By the way, they are, in spite of your belief otherwise, Americans...without the quotation marks.
"We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness."