The Great Wall Of Mexico should stimulate a lot of job growth along the border.
California, Arizona, New Mexico, and Texas should all benefit from this, therefore their Congressional rep's should all go for it and support it.
Ariz. and Tex. are both GOP and therefore no problem.
NM is a swing state, but should also be no problem.
Calif. is wacko and DEM and therefore that may be where the big gap in the Wall is going to be. There be Mexicans hemorrhaging into Cali even now as we speak and that will probably never change. They will probably fight the wall in their state tooth and claw both in and out of the courts with protests and marches.
How long until Calif. falls off the ocean?