Napolitano unveils plan to combat border violence during tour

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Napolitano unveils new border plan in Nogales

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NOGALES - Homeland Security secretary Janet Napolitano said Wednesday that requests for putting the National Guard back along the Mexican border are under review.

Arizona's former governor said President Barack Obama wants to know what missions the soldiers would perform.

At a news conference, Napolitano said the president is looking at the requests from Govs. Rick Perry of Texas and Jan Brewer of Arizona.

Thousands of Guard troops performed various support duties along the border for two years during the Bush administration, from building fences to reporting illegal immigrants, to freeing Border Patrol agents to focus on border security.

Meanwhile, U.S. Sens. John McCain and Jon Kyl called for returning troops to the border to assist against violence spilling over from the drug war in Mexico.