Immigration Reform Divides the Country

CNN It's estimated there are at least 12-million illegal immigrants in the U.S. and some are trying to prevent that number from growing: "if we take away their incentive for coming here -- the reason that they came was to get a job. If they no longer can work here, that's their pink slip, they're going home," said T.J. Bonner with the National Border Patrol Council.

Lawmakers are at odds over immigration reform. Some say illegal immigrants should be given a path to citizenship. Border security is another issue.

A CNN opinion research corporation poll shows the nation split over a proposal to build a border fence between the U.S. and Mexico. It shows 52% percent favor the idea while 47% percent oppose it.

Illegal immigration is a hot topic on the presidential campaign trail, as the candidates fight for Latino votes.

Presidential Candidate Barack Obama (D): "When companies hire undocumented workers instead of legal citizens to avoid paying overtime that is a problem that all of us - black, white, and brown - must solve as one nation."

Presidential Candidate John McCain (R): "We must prove to them that we can and will secure our borders first, while respecting the dignity and rights of citizens and legal residents of the United States of America."

San Francisco is taking heat for being a so-called sanctuary city for illegal immigrants. It's a practice officials there are now reversing.