While not unthinkable, getting Christianity into the Constitution as the official religion is likely not going to happen. But that doesn't mean that plenty of things won't end up on Trump's desk which make Christianity effectively the official religion (if you already think that's the case, you ain't seen nothing yet). We have to trust Trump to be able to stand up to those who put him in power and veto this stuff? While he may surprise me, as they say, I trust him about as far as I could throw him.
Not a goddamn chance. There's absolutely no way this could possibly change. This is one of those sacred American things, written into the framework of the entire country. Even if a small minority of people are for it, it would NEVER pass.
Yeah, you could say "Well, people were saying the same thing about a Trump presidency a few weeks ago, and here we are." I get that strange things are happening, but Trump was elected via the American process, so it's not like all the rules are falling apart.
As P.J. O'Rourke said, though I think he was quoting someone else: America has one political party, and like everything in Anerica it was two of them.
Don't get me wrong, I think Trump has the potential to do some good. I am still unsure how much of his campaign he actually believes or intends to do. Term limits, I think, are probably a good thing, though also probably a long shot. If he keeps his word on not being able to be bought, that will be good. More non-professional politicians in government is probably a good thing in general.
That said, because of Trump you can almost certainly kiss goodbye: climate/renewable energy science, net neutrality, Roe v. Wade, higher minimum wage, etc. You can bet that soon the official language/religion of the US will be English and Christianity respectively. Nuclear weapons will almost certainly go back into production and military spending in general will skyrocket, while education funding continues to shrink.
It would take a hell of a lot of corruption from Hillary to get me to vote for any of that.