Lawmakers have signaled interest in discussing gun control measures. Here's what we know

WASHINGTON – As the nation continues to reel from a series of mass shootings, lawmakers on both sides of the aisles have increasingly discussed revisiting gun-control legislation.

Back-to-back shootings in El Paso, Texas and Dayton, Ohio restarted a national gun-control debate that reached members of Congress and the White House this week.

Some lawmakers are calling for "red flag" gun laws, while others are advocating for expanding background checks.