What Mexico Looked Like Before Manifest Destiny

Conservatives scream bloody murder about illegal immigration but it only shows what they were doing during American History class (i.e. sitting about with their thumbs in their, um, mouths).  The map below shows all the states which typically scream the loudest and not one of them was part of the United States before Manifest Destiny made it ok to take every square inch of land regardless of whomever lived there already.

The Lousiana Purchase gave a quasi-legality to the Midwest but there wasn't even that for the Southwest and California.