Treaty of Guadalupe Hidalgo: Why are our politicians encouraging Mexico to breach this agreement?

[danielpalos]

Getting down to the nuts and bolts of it...Our own politicians are encouraging Mexico to breach an agreement and take back what they sold to us in 1848...Is this common around the world...do elected officials in other nations encourage neighboring nations to discreetly conquer their territories?
It’s an almost silent form of conquering but it’s conquering nonetheless. It is descendants of Mexico inhabiting and running California and much of other states due to this breach.
Does this seem like an odd dynamic to anyone else?

we have an express establishment clause for naturalization, not immigration.