Great! Give the fu**er back to Mexico! Take those 54 electoral votes with you and give free transport to there for anyone wanting it. Then change the wall design to a) 50 feet high and with a slippery slide and b) where it goes. open the California border with Mexico and shut it with the eastern border.
Then come up with the U.S. Doctrine that any Chinese or Russian military troops will mean nuking the thing.
It ALREADY IS Mexico believe me I live here!! I applied to be a temporary census worker here in CA. I recently retired and figured it would keep me busy for awhile, WELL in MY OWN COUNTRY speaking Spanish was a REQUIREMENT!! I was furious GIVE ME A DAMN BREAK!!!