American settlers in Texas, with U.S. support, declared independence from Mexico to protect slavery, which was illegal in Mexico. Nothing noble about that.
Did we take territory from Mexico during a war? Of course, during the war we actually took ALL of Mexico, seems to me we gave a lot of it back
We let them keep half their country? Aren't we special! I guess if Russia took all of the Ukraine and gave half of it back, they'd be wonderful too.
I'd bet that the people who live there now wish we had kept it all
Mexico would be much wealthier country if we hadn't taken half of their territory. Not to mention the constant meddling of the United States in Mexican affairs. As Mexican President Porfirio Diaz said: "Poor Mexico, so far from God and so close to the United States!"