We need to go back to what America used to be: a country of immigrants, and laissez-faire capitalism (under this system, which I submit is the only truly moral social system, each additional immigrant adds value and earns his own keep).
(One of the worst things America did under FDR was to turn back boatloads of European Jews fleeing Hitler. Think of the value - for other Americans - that those people could have created if they were let in instead of being turned back to be exterminated. We need to overturn much of what FDR and his ilk did to this country. Not just freeing immigration and emigration, but unshackling us from their social programs, too.)