I was thinking about this immigration problem.
How about this:
If you have been in the Marines or ok even the other services and been to the wars, you are in. If you are willing to die for the flag, that is proof enough we need you as an American.

As for the other folks, as long as you have not committed a felony, you get 2 years to apply and complete all requirements for US citizenship and yes, you gotta pass a Constitution, American History and English test, then if you do that and have a job, Welcome to the family.