[flagged]
Comprehensive immigration reform (which is sorely needed) can only come from the Congress (who have no incentive to act because everyone is so focused on the Presidency).
Without the laws changing, the only choice is to enforce the laws as they are.
Something that has been ignored since Obama (who deported far more than Trump ever has... Obama deported primarily criminals, however, and Trump is deporting anybody he can)
Its important to understand that congress explicitly enables this current behavior. In 18 months the people will have the opportunity to express their will. If your congress people are enabling this, then it's your responsibility.
Best case might be a strong Republican majority in both houses that can just say 'no' to Trump or at least stiffle certain agendas. Politics is a blood sport, after all.
The current situation is of political survival. Nothing more.
But I don't see how more Rs is going to make it less a matter of political survival to back him. He'll still have them primaried if they don't fall in line.
Nobody is saying this should happen; they are saying that if someone is accused of being in the country illegally then we should investigate that accusation and attempt to arrive at a conclusion that is as close as possible to the truth. Indeed, treating that as optional is authoritarian.