There is no one "put in danger" by immigrants.
Immigrants have less than half the crime rate of citizens.
The natives are the good guys, and its Europe that descended into capitalist dictatorships, feudalism, slavery, wars, etc.
Native Americans are not perfect, but better than Europeans.
Look at Palestine, and you see it is the Polish and Russian immigrants who blew up the British peacekeepers, gunned down Folke Bernadotte, massacred hundreds of native villages like Deir Yassin, and imposed a genocidal starvation blockade.