WASHINGTON - OCTOBER 07:  Sen. Jon Tester (D-MT) holds a press conference on Second Amendment rights at the U.S. Capitol October 7, 2009 in Washington, DC. The senator urged the Supreme Court to uphold gun rights for individual states in the McDonald v. The City of Chicago case. Getty Images logo Getty Images 1 month ago

WASHINGTON - OCTOBER 07: Sen. Jon Tester (D-MT) holds a press conference on Second Amendment rights at the U.S. Capitol October 7, 2009 in Washington, DC. The senator urged the Supreme Court to uphold gun rights for individual states in the McDonald v. The City of Chicago case.