Monica Ortiz Uribe

New Mexico Gov. Susana Martinez is the ultimate immigrant success story and, with an overall approval rating of about two-thirds of residents in her state, she's arguably the most popular Republican governor in the country. But that popularity doesn't always extend to Hispanics.

Mexican and U.S. leaders have vowed to track down the gunmen who killed three people, including two U.S. citizens, with ties to the U.S. Consulate in the border town of Juarez. Mexican authorities say they believe the killings are linked to the country's raging drug war.