Has Trump told you what he has planned on immigration?
When you reward something, you get more of it. We had a "one time" amnesty in 1986. The proponents said there would never be another. At the time the USG estimated that 1 million would apply, but the true number turned out to be 2.7 million. We now have 12 million according to the USG, but other estimates range as high as 30 million. The Heritage Foundation estimated the costs to the taxpayer of amnesty at $6.3 trillion if we just have 12 million.