Don't forget that after being expelled from Jordan, Arafat relocated to Lebanon where he proceeded to take over the South ("Fatahland"), start a civil war, and pull in Israel with constant attacks across the border. Until Israel kicked them out in 1982, the Palestinians played the disruptive, parasitic role in Lebanon that Hezbollah plays today. In fact, Hezbollah rose to power precisely by filling the void left by the Palestinians in 82.

You're probably aware of your bigotry, as the stupid smiley at the end of your comment seems to suggest, but your reasoning only serves to support the pre-made conclusion of 'Palestinians are genetically evil'.

Are you sure? Jordanians tried and it burned them spectacularly. And if my memory served, Egypt also tried to some extent and eventually was eagerly and happily offloading Gaza into Israel's hands. Then, they built a huge border defensive line to keep Gazan out that would make Trump's Mexican border a joke in comparison.

At some points people need to wonder why.

This is to a large part to give Egypt plausible deniability. They don’t want to deal with Gaza, refugees, or a humanitarian crisis, but also don’t want the political fallout of taking action like the Israelis do.

> Ending foreign aid to Egypt is probably very aligned with ending foreign aid to Israel in terms of popularity among American voters

I strongly suspect the average American has absolutely zero sense of how much foreign aid we give Egypt. That's not to contradict your point directly, just that it isn't a very salient part of American politics (unlike Israeli foreign aid).