The House Judiciary Committee is hearing testimony on two bills Tuesday aimed at firming up background checks on private gun sales.

The hearing comes after Monday's shooting in Boulder, Colorado, which marked the seventh mass shooting in the United States in seven days.

House Bill 8 and House Bill 1446 would apply independent background checks to all private sales and gifts of guns and increase the waiting period from three to 10 days.

Waterbury Police Chief Fernando Spagnolo testified that similar laws in Connecticut fueled a 41% reduction in gun homicides in the state, but that the state is still at risk without a national solution.

President Joe Biden showed his support for the bills, saying, "These are bills that received votes of both Republicans and Democrats in the House. This should not be a partisan issue. This is an American issue."

Connecticut law enforcement are among those being asked to testify.

Sen. Richard Blumenthal called on Congress Tuesday to pass a national version of Connecticut's Extreme Risk Law.

Republican members of the Judiciary Committee say the two bills would only make it harder for responsible gun owners to legally buy firearms.

Biden also called for a new ban on assault weapons and high-capacity magazines. A previous national ban expired in 2004.