Congressional Democratic leaders warned President Donald Trump on Sunday, Sept. 15, that any proposal on gun control must include a House-passed bill to expand background checks for gun purchases—or else risk no legislation at all, according to The Associated Press.

“This morning, we made it clear to the president that any proposal he endorses that does not include the House-passed universal background checks legislation will not get the job done, as dangerous loopholes will still exist and people who shouldn’t have guns will still have access,” House Speaker Nancy Pelosi (D-Calif.) and Senate Minority Leader Chuck Schumer (D-N.Y.)  said in a joint statement after a call with President Trump.

White House spokesman, Judd Deere confirmed that President Trump spoke with the Democratic leaders.

“The conversation was cordial,” Deere said. “The president reiterated his commitment for his administration to continue work on these issues.”

The president “indicated his interest in working to find a bipartisan legislative solution on appropriate responses” to mass shootings, Deere added.

Senate Majority Leader Mitch McConnell (R-Ky.), has declined to hold a vote on the bill, which was approved by the Democratic-controlled House in February. He said it’s not clear the Senate would be able to pass the legislation or that Trump would sign it into law, according to AP.

“We know that to save as many lives as possible, the Senate must pass this bill and the president must sign it,” Pelosi and Schumer said. 

“We will not stop until these bills are passed and our children’s lives are safe,” they added.

Pelosi and Schumer said they promised President Trump that if he endorses the House legislation on background checks and gets McConnell to act on it, they would join the president “for a historic signing ceremony at the Rose Garden.” 

The push for universal background checks comes amid mass shootings in Texas and Ohio last month that left over 30 people dead and wounded many others. 

Most Americans support universal background checks, according to multiple national and state polls, the Hill reported. 

Includes reporting from The Associated Press