A van is stuck in rising the waters on a street in Plainfield, Ill., after torrential rains that began Wednesday night caused widespread flooding in the area. Photo: AP
IMF Managing Director Christine Lagarde, left, greets, Ngozi Okonjo-Iweala, Finance Minister of Nigeria, during a media availability before a meeting of the G-24, during the Spring Meetings of the World Bank Group and the International Monetary Fund in Washington. Photo: AP
In this photo released by the White House, President Barack Obama talks with staff at Massachusetts General Hospital in Boston. Mr. Obama visited the hospital to meet with patients who were wounded in the bombings in Boston, following an interfaith prayer service at the Cathedral of the Holy Cross. Photo: AP
Mangled debris of a fertilizer plant are seen, a day after an explosion leveled the plant in West, Texas. The massive explosion at the West Fertilizer Co. Wednesday night killed as many as 15 people and injured more than 160. Photo: AP
Senate Majority Whip Richard Durbin of Ill., right, signals "time-out" as Sen. John McCain, R-Ariz., center, begins to tell a joke during a news conference on Capitol Hill in Washington, to discuss immigration reform legislation. From left are, Marco Rubio, R-Fla., Sen. Charles Schumer, D-N.Y., McCain, Sen. Robert Menendez, D-N.J., Sen. Lindsay Graham, R-S.C. and Durbin. Photo: AP
Hundreds of shoes are displayed to symbolize the lives lost to gun violence in the U.S. since the 1999 Columbine High School shooting, during a rally and vigil to honor victims of gun violence, sponsored by Colorado Ceasefire, on the steps of the Colorado State Capitol, in Denver. Photo: AP
Shown are items left at a makeshift memorial near the finish line of Monday's Boston Marathon explosions, which killed at least three and injured more than 140, in Boston. Photo: AP