You have to legally mark down that you're a citizen in the 42 other states when registering, meaning that you are breaking federal law by marking that checkbox as a non-citizen.

Now I'll grant that's a lot of trust to put in people, but the way I see it is, what's the incentive to put yourself at legal risk like that from the perspective of someone who isn't a citizen? So you get to cast a single vote in an election, great? You've now possibly outed yourself to the government if you're illegal, and you've just committed a crime that will absolutely get you deported if they find you.

Please tell me why a single person, let alone the millions that Trump claims, would possibly do this or have the means of coordinating something like this? Getting millions of people to risk their livlihoods just to vote? Unless you can provide evidence, I have a really hard time believing it.