I support the right of the US to limit hispanic immigration because the moment Mexico lost the will to fight for the land stolen by the Anglo settlers the mexican northern provinces became legitimate US posession.
The palestinian people suffer to this day for the land lost to Israel. It is depicted in all palestinian artistic expressions, music, literature, poetry, painting, sculpture... you name it.
Palestinian grandparents, moments before they die, call their grandchildren and "officially" gave them the keys to their homes in Western Palestine begging them to promise that, someday in the future, they will return to their ancestral land.
Compare these emotional link to Western Palestine with Mexican's attitude towards Texas, California, New Mexico etc, etc...
It's just a distant, somewhat melancholic memory from the time their country stretched from Central America to Canada.
Palestinians are prepared to fight and die for their ancestral homeland.
Mexicans wouldn't even jump a fence to live in their former provinces if they knew they wouldn't make any money there.
The difference between the two peoples and their relationship to the land lost to invaders couldn't be any more different.