Sen. Strom Thurmond of South Carolina after his 24+ hour filibuster in 1957. He was a Democrat then. Later, Thurmond would switch to the Republican Party. AP hide caption

itoggle caption AP

An unmanned drone patrols the U.S.-Canadian border. Attorney General Eric Holder, in a letter to Sen. Rand Paul, R-Ky., said the president could in an "extraordinary circumstance" order a drone strike inside the country. U.S. Customs and Border Protection /AP hide caption

itoggle caption U.S. Customs and Border Protection /AP

Rep. Ron Paul, R-Texas, brought thousands to the Sun Dome in Tampa on Sunday for a "we are the future" rally. Becky Lettenberger/NPR hide caption

itoggle caption Becky Lettenberger/NPR