ALEXANDRIA, VA - AUGUST 17: U.S. Transportation Secretary Ray LaHood (L) and Health and Human Services Secretary Kathleen Sebelius hold a news conference to launch the "Look Before You Lock" campaign against leaving children inside parked cars at the Campagna Center at George Washington Head Start August 17, 2012 in Alexandria, Virginia. 23 children in the United States have already died from hyperthermia this year after being left in hot cars. (Photo by Chip Somodevilla/Getty Images)
