Maybe, but there is a Palestinian from Michigan in Congress, Justin Amash, and he's a Republican. Just because they disagree with US policy towards Israel doesn't mean they all want communist healthcare. Politics begins at home, right?
You left out an important detail.
His father is a Palestinian Christian, and his mother is a Greek Orthodox Christian from Syria.
His immigrant parents were sponsored by an American Christian church, back in the good old days when immigrants were actually required to have sponsors.
Justin Amash is a huge NeverTrumper.