Washington ? President Bush urged Congress on Saturday to find a middle ground between mass deportation or instant U.S. citizenship for the estimated 12 million illegal immigrants already living in America.

Bush’s radio message was the third time this week he has spoken out about immigration.

On Monday, in a televised address from the Oval Office, Bush said he would order as many as 6,000 National Guard troops to secure the U.S. border with Mexico and urged Congress to give millions of illegal immigrants a chance at citizenship.

“This week I asked Congress to provide funding for dramatic improvements in manpower and technology at the border,” Bush said Saturday. “We’ll hire thousands more Border Patrol agents. And to help these agents do their jobs, we will deploy advanced technologies such as high-tech fences in urban areas, infrared cameras and unmanned aerial vehicles.”

On Thursday, the president traveled to Arizona to tour an unfortified section of the border in the desert. He endorsed using fences and other barriers to cut down on illegal crossings. The Senate on Wednesday voted to put 370 miles of fences on the border.

Bush wants an immigration bill that pairs up better security on the border with a guest worker program.