Amo and 32 Democratic colleagues have asked the FBI and ATF for an update on the case, and specifically about the gun used.

The origin of the 9mm pistol that Claudio Neves Valente fired in a Brown University lecture hall is not known to the public. But investigators have completed their trace of the gun, which means they ...

U.S. Rep. Gabe Amo and nearly three dozen other Congressional Democrats are asking federal law enforcement agencies for a formal briefing on their investigations of the mass shooting at Brown ...