Why not build a giant moat instead of a wall. Seems like it would be cheaper and easier to maintain.
Donald Trump’s Mexican Border Wall Is a Moronic IdeaThe data show that fences don’t keep migrants out — they just keep them from going home.Although the intent of border enforcement was to discourage migrants from coming to the United States, in practice it backfired, instead discouraging them from returning home to Mexico. Having experienced the risks and having paid the costs of gaining entry, undocumented men increasingly hunkered down and stayed in the United States, rather than circulating back to face the gauntlet once more. As a result, the rate of return migration began to fall after 1986 and accelerated with the launching of the border operations in 1993 and 1994.http://webcache.googleusercontent.com/search?q=cache:F2_rNfA3pP8J:foreignpolicy.com/2015/08/18/donald-trump-immigration-border/+&cd=1&hl=en&ct=clnk&gl=ca
Horseshit....when the economy in CA, TX, NM, and AZ started to tank in 2008, those cockroaches scurried back to Mexico faster than a Shizzo blowjob