Current legal immigration requires applying at our embassies and being vetted in their home countries. They shouldn't even be allowed to show up at our door requesting anything.Here is my honest take on it. Step 1 shut it down completely except for the checkpoints we have. Turn them away instantly. Step 2 come up with some other paths to citezenship via for lack of a better term probation. They need to have either skills or willingness to learn them. They would still have to enter this country via checkpoints.and go through a vetting process. Ie no murderers/ repists, terrorists, etc.