led the shooter to commit such a horrific act. as investigators search for answers, lawmakers in washington are broaching the debate over gun control. this time with small signs of agreement, republicans have expressed openness to a measure that would ban or restrict ownership of bump stocks, the mechanisms used by the las vegas shooter to turn his semiautomatic rifles into something more closely resembling an even more rapid-fire automatic weapon. even the nra endorsed tighter restrictions on the device though the gun group wants to avoid doing this. through any new legislation. one senator at the center of this debate is democrat chris murphy. of connecticut. he represented newtown in congress at the time of the sandy hook shooting in 2012 and he is now calling on congress to, quote, get off its ass and do something about gun violence in america. senator murphy is joining us live from connecticut. senator, thanks for joining pusp a growing number of republican lawmakers say they're open to regulating or