They have to take the criminals back, and the welfare leaches. OTOH, the ones who want to work and pay taxes can stay, BUT the countries they came from have to take one of our welfare leaches for each illegal we take.
Oh, I would sweeten the pot a bit -- current welfare recipients can keep their welfare checks as long as they live. But, their children are on their own.
In one generation we could solve the welfare problem and the immigration problem...
That's too easy. They have to take one liberal college professor, lawyer, or politician for each illegal we take.