Obama unveils $500 million gun violence package
These letters, provided by the White House, from children, from left, Julia, 11, of Washington; Grant, 8, of Maryland, and Taejah, 10 of Georgia; ask President Barack Obama to change gun laws. Children from across the U.S. who expressed their concerns about gun violence and school safety to the one person they think can make a difference: the president. (AP PHOTOs)