Democratic presidential hopeful Rep. Tim Ryan Timothy (Tim) RyanNow's the time to make 'Social Emotional Learning' a national priority Mourners gather outside Supreme Court after passing of Ruth Bader Ginsburg Lincoln Project hits Trump for criticizing Goodyear, 'an American company' MORE (D-Ohio) on Monday called President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE's proposal to tie background checks to immigration reform in the wake of two mass shootings which rocked the nation this weekend “an absolute freaking joke.”

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"That's an absolute freaking joke that he's going to tie this to the most polarizing issue happening in the United States today around immigration reform," Ryan said from Dayton, Ohio, the site of one of last weekend's two shootings.

"This is very clear-cut: There are people getting access to guns that shouldn't be and the guns are high-powered, the magazines hold too many bullets."

A gunman killed 20 people and wounded dozens more in an attack at a Walmart in El Paso, Texas, on Saturday. Less than a day later, at least nine people were killed and more than two dozen were injured in the Dayton shooting.

The two massacres are not believed to be linked.

Ryan suspended his presidential campaign to return home to Ohio following the Dayton shooting.

Earlier on Monday, Trump suggested in a tweet that gun control legislation should be linked to "immigration reform." Trump did not provide specifics on either proposition.

The president is set to deliver a speech on the shootings from the White House this morning.

Democrats in the wake of the shootings have renewed calls for the Senate to take up the universal background check bill that the House passed earlier this year, demanding that Senate Majority Leader Mitch McConnell (R-Ky.) bring the Senate back from recess to get the bill passed.

"Mitch McConnell needs to get off his ass and do something," Ryan said Monday.

"People are getting killed in the streets in America and nobody is acting. There is a bottleneck in the United States Senate, the House has sent a comprehensive background check bill that is supported by 80 to 90 percent of the American people. What the hell are we doing in the United States of America?"