Some 376 law enforcement officers massed at the school, yet 'no responder seized the initiative to establish an incident command post,' investigation finds, drawing parents' rage

Footage sparks fresh anger over seemingly lackadaisical response to school shooting by officers, with families already bemoaning chaotic investigation and lack of answers

Most impactful firearms legislation in decades will tighten rules for selling guns to young people, earmark money for mental health, but stops short of banning assault weapons

Head of state police raps district chief's 'terrible decisions,' prioritizing officers' lives over those of 19 students killed; mayor pushes back, calls Senate hearing 'clown show'

New revelation deepens questions about why police didn’t act faster to stop a shooter who killed 19 children and two teachers at an elementary school in Texas, last month

Measures include access to juvenile records of young gun buyers and incentivizing states to enable confiscation of guns from those deemed dangerous; Biden hails 'important steps'

Survivors and parents of victims from shootings in Buffalo and Texas recount harrowing shootings, urging lawmakers to take action on guns

Department of Homeland Security cites January standoff at a synagogue in Texas linked to al-Qaeda supporter -- but stresses that greatest threat stems from domestic terrorism

Unclear how school district police leader Pete Arredondo was communicating during shooting, underscoring concerns about law enforcement's response

Addressing nation, US president calls for voters to 'use' outrage in midterm elections if legislators don't act in wake of several deadly mass shootings