The Pilgrims got off the ship and went inland to “Do the work the Natives would not do”! So it was all across the continent. Now the Mexicans come here as did the Pilgrims.
They had to sink or swim. They developed a civilization and a nation that has far exceeded in wealth, generosity and personal liberty anything ever seen anywhere else on Earth at anytime in mankind’s history.
The Mexicans you mention sneak in as criminals like heavies in the night, whine for food stamps, medical care, free education and make demands for “rights.”
One group of illegal aliens (Aztlans) demand that we give the country to them lock stock and barrel.
Bad comparison.