I have solved the problem with security along the border between Mexico and Texas, New Mexico, & Arizona.
First thing - we give Texas back to Mexico.
POOF problem solved. No Texas, no Texas border problem.
NEXT
We sell New Mexico to Mexico
POOF. No more problem with residents of New Mexico being told they aren't US citizens by uneducated yahoos. And no border issues.
We sell Arizona to Mexico.
POOF. No Arizona, no Arizona border problem.
A few lingering problems remain however...since Joe Arpaio isn't a Mexican citizen it may be difficult to decide what to do with him. Deport him back to the US? Make him wear pink underwear and toss him in jail? Give him a visa and see if he can get a job as a Sheriff in Mexico somewhere in the new MEXICAN state of Nueva Arizona
Now there are a few problems with this plan but I think the benefits outweigh the few minor issues:
Grand Canyon? Hey we can still visit.
Austin texas? Maybe we can keep that in exchange for letting Mexico have St Augustine Florida
Susan G. Komen for the Cure? Their headquarters can stay in Houston, Mexico...as long as they change the name to Maria Alvarez para la cura
See?
it's all so easy