Immigrants run to jump on a train in Ixtepec, Mexico, during their journey toward the U.S.-Mexico border. President Obama wants nearly $4 billion in emergency funds to deal with the tens of thousands of children from Central America who've been crossing the border. Eduardo Verdugo/AP hide caption

itoggle caption Eduardo Verdugo/AP

Only 7 percent of Americans polled by Gallup said they have "a great deal" or "quite a lot" of confidence in Congress as an American institution. Brendan Smialowski/AFP/Getty Images hide caption

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Rep. Coya Knutson (D-Minn.), is shown shopping in a supermarket in 1955 following her demand to know why her fellow housewives remain saddled with high grocery bills while farm income continues to drop. Maurice Johnson/Bettmann/Corbis hide caption

itoggle caption Maurice Johnson/Bettmann/Corbis

Attorney General Eric Holder testifies before the House Judiciary Committee on the oversight of the U.S. Department of Justice on Capitol Hill in Washington, Tuesday. Manuel Balce Ceneta/AP hide caption

itoggle caption Manuel Balce Ceneta/AP