The House erupted into deafening shouts as Republicans attempted to end Democrats' sit-in on the floor with a vote unrelated to gun control.

Democrats began commandeering the House floor around 11:25 a.m. and vowed to press on until GOP leaders scheduled votes on bills to prevent terror suspects from buying guns and to expand background checks.

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Shortly after 10 p.m., Republicans called an unrelated vote to override President Obama's veto of a measure disapproving of the Labor Department's fiduciary rule

GOP leaders had ordered the House into recess throughout the day as Democrats refused to cede the floor.

Ryan could barely be heard over the din as he asked for proper chamber decorum, and many Democrats held up sheets of paper with the names of gun violence victims.

Democrats forced a roll call tally on the measure, preventing Republicans from using a voice vote to claim the two-thirds majority needed to override Obama's veto of their initial bill.