The Senate Judiciary Committee holds a hearing on the Assault Weapons Ban of 2013 beginning at 10 a.m. Eastern. Watch it live here.
Neil Heslin, whose 6-year-old son Jesse was killed in the shooting at Sandy Hook Elementary School in Newtown, Conn., in December, is set to testify.
He and three dozen others — including other Newtown families and relatives of other mass shooting victims — are in Washington lobbying lawmakers.
The legislation is sponsored by Sen. Dianne Feinstein, D-Calif., to ban assault weapons.
Other witnesses testifying include William Begg, an emergency room doctor who treated Newtown victims that day, and U.S. attorney John Walsh from Colorado.
— The Associated Press
Photo: Neil Heslin holds a picture of himself with his son Jesse and wipes his eye before testifying at a hearing in the Legislative Office Building in Hartford, Conn. AP/Jessica Hill