Should we expand our borders?

We have another option besides building the"WALL" and that would be expand our borders. Yes, that's right take over Mexico. I am all for this idea myself. The only thing that is going to make Mexicans want to stay in Mexico is if there economy greatly improves, eliminate there corrupted government, improve there infrastructure and round up all the drug lords and cartels. The only way we can do that, because they can't do it on there own, is by military force. Sure we'd have to iron out a few details but it's a great idea and solution to three problems and ours.
viva La Amerixco?