Senate advances bipartisan gun safety bill, setting up final vote by week's end

The Senate on Tuesday night voted 64 to 34 to advance a bipartisan gun safety bill that if passed will strengthen background check requirements for gun buyers under 21 and provide federal funding for states to administer so-called red flag laws and mental health services.  

Fourteen Republicans voted in favor of the procedural measure to advance the bill, which follows two mass-shootings in May in which a total 21 people were killed including 19 Texas elementary school children.