A recent Zogby poll shows that 22 percent of Americans would support the possibility for a state to secede from the nation, and probably reflects citizen anger with Washington more than anything else. Those surveyed answered the question, "I believe any state or region has the right to peaceably secede and become an independent republic."
Most interesting to me was the ethnic breakdown, and the fact that Hispanics supported the idea of state secession more than anyone else.
Broken down by race, the highest percentage agreeing with the right to secede was among Hispanics (43%) and African-Americans (40%). Among white respondents, 17% said states or regions should have the right to peaceably secede.
[Middlebury Institute/Zogby Poll: One in Five Americans Believe States Have the Right to Secede, Zogby International, July 23, 2008]
Do Hispanics believe that they could vote for a state to secede (like California, which permits voter referenda) and then join up with Mexico? Quite possibly. Recall that a 2002 Zogby poll revealed 58 percent of Mexicans believe the American Southwest belongs to them