Yes - Enough allready
No - Its never crazy enough
hell yeah. Not for him though. Honestly, why should never change it? Things change, and laws should to
Even though I'm not American so it doesn't affect me, editing the constitution, which is your most known legal document, seems stupid- NZ would not do too well if our government edited the Waitangi treaty, I can't see editing the constitution being good.
Since the natural-born citizen clause is such a serious business in the US, things would only get worse if the government removed one of the ways to be eligible for it. For one thing, it favors discrimination against legal immigrants, without doing anything to solve the issue of illegal immigrants.
He can propose an amendment, but he doesn't have the authority to do so. Only congress can. It's a good idea in my opinion, but it's up to congress.