when did getting 30% support start counting a 'winning'?
you get 30% on a test at school and that is called -failing-
I think Bill Clinton won with less than 30%. I seem to remember reading that less than 50% of people register to vote. Less than 50% of the ones who register, show up to vote. Less than 50% of them support any one candidate. Yet those are the people who decide who will be president. The only person I know of who got an "A" because he received 100% of the votes was Saddam Hussein. What you are proving to all of us is your analogies about school test grades are about as accurate as your notion that Trump wants to institute mass searches. You seem to be spending too much time sitting around coffee houses with left-wing liberal progressives.
Let's look at what states would be allowed to do lawfully if we had a president who ordered deportation of illegal immigrants.
Any time you or I have to show ID, an illegal can't because he won't have one. So illegal immigrants won't be able to board planes. They won't get a drivers license. They can't lawfully work for any employers that agrees to use E-Verify. They can't receive social services. When arrested for even minor offenses, they would be deported if they failed to prove they are here lawfully. They cannot open a bank account. They can't cash a check. They can't check in to a hospital or go see a doctor and receive services. They can't get a loan. Schools can require proof of citizenship to keep them from dumping their children into public schools. Colleges can refuse to let them enroll.
If you were trying to live in the U.S. illegally and the U.S. took lawful actions to restrict what you can do here, you would seriously think about going back to wherever you came from and maybe trying to reenter lawfully to get a work permit. Mass searches are not part of the equation. Only you have suggested such a thing by using your limited math skills to come to that conclusion.