But, honestly, why would anyone run for president unless they were an insane egoist or craved power? It's not a job a sane person would volunteer to do.
There are a few rare individuals that do it out of desire to do good, but they seem rarer by the day.
There's a reason he ran as a Republican in the first place.
He doesn't really alight with either party.
But he's most certainly anti-free-trade. All of his business and money is in the US (mostly in real estate). It's in his best interest to artificially prop up US industry by shutting down inbound trade.