It takes a lot more than a "democratic vote" to overturn the 1st Amendment.  It takes an amendment to the Constitution, which requires a two-thirds vote in both Houses and 75% of the states to ratify.  The fundamental principles this country were founded are protected from the current whim of the majority.

Immigration explained in gumballs:  https://www.youtube.com/watch?v=LPjzfGChGlE

No, it really doesn't matter what the rest of the world thinks of us.  We have to get our own house in order, and they're responsible for theirs.  As the above video shows, we can't carry the rest of the world on our backs.  The best thing that could happen to them is for some billionaires find a way to employ them with a capitalist for-profit enterprise.  More than half the world lives on $2/day.  $200/mo would be a huge improvement in their lives.  Capitalism is the only sustainable economic enterprise because profits restore spent capital.  Government and charity can't do that.