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Newt Gingrich stood center state Thursday night in the Sioux City Convention Center. The sharpest elbows did not come from his close rivals, Mitt Romney or Ron Paul. Instead, it was Michele Bachmann who repeatedly went after Gingrich.

Congressional negotiators have reached agreement on a compromise spending bill to avert a weekend federal shutdown. They also worked toward a deal renewing the payroll tax cut and unemployment benefits for another year.

Minnesota Congresswoman Michele Bachmann once appeared to be the favored Republican presidential candidate in Iowa. But she's been near the bottom of most polls since. Bachmann is making an aggressive push to finish well in next month's Iowa caucuses, and she embarks on a multi-day bus tour of the state Friday.

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It's MORNING EDITION from NPR News. I'm Renee Montagne.

Joe Arpaio, the man who calls himself America's toughest sheriff, is not backing down. The U.S. Justice Department yesterday accused his sheriff's department in Maricopa County, Arizona of systematically violating the constitutional and civil rights of Latinos. By the end of the day, NPR's Ted Robbins reports, the sheriff was hitting back.

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Congress has already OK'ed a bill authorizing more than $660 billion to be spent on defense. Senate approval came yesterday, the same day the Pentagon declared an official end to the war in Iraq. Among the troops coming home from Iraq are the soldiers of the 112th Cavalry 3rd Brigade 1st Cavalry Division.

NPR's Wade Goodwyn was there for their return to Fort Hood, Texas.

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