It won't be very fun. The labor unions of Mexico aren't real funny --- they hold a lot of power and some of the more powerful sindicatos can shut that country down. Labor unions might not attract Americans in big numbers but most of Mexico's labor force is unionized and it was that group that won the Mexican Revolution and brought in the PRI party. There is almost now way the next Mexican Revolution won't involve our country --- and I've heard the family stories of the former refugees on what kinds of things went on.
I guess the Bush's of the world never heard of Ceasar Chavez.
If Mexican labor unions is what the pinheads of the GOP want, then Mexican labor unions is what they'll get...Like I said, they better be careful what they wish for.