He supported Romney in 2012, but he bashed him for being too tough on immigration. Trump hired one of the biggest amnesty shills in the GOP, Corey Lewandowski, to be his campaign manager. Lewandowski wants to enact a weaponized form of amnesty. You think someone who is against amnesty would do that? Trump is a real estate developer and employs tons of illegals. It's completely foolish to trust him on immigration.
Reagan was a Democrat until the early 1960s, shortly before he was elected Governor of California, so you could make the same argument against him.
I trust no politician, Nick. I look at whom Trump is surrounding himself with on the illegals issue (Sessions), and if he were not serious about it, he wouldn’t be involved with him at all. But what have you to worry about, he’s not really running (your words).