Schumer, speaking from the Senate floor, said Trump's comments "drip with racism" and questioned if Republicans weren't commenting "out of embarrassment or agreement." 
 
"Where are you when something this serious, this bigoted, this un-American happens? If you're saying to yourself, 'Well, he got us our big tax credit. Well, he's taking regulations off big corporations. ... We have to go along with this racism,' you are making a deal with the devil," Schumer said. 
 
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Schumer added that people who refuse to denounce Trump's comments are "fellow travelers on the president's racist road, whatever their motivation" and said their responses were "insufficient and un-American." 

Trump sparked fierce and widespread backlash — largely from Democrats — on Sunday when he targeted a group of unidentified progressive congresswomen "who originally came from countries whose governments are a complete and total catastrophe."

In the tweets, which appeared to be directed at Democratic Reps. Alexandria Ocasio-CortezAlexandria Ocasio-CortezOcasio-Cortez blasts Electoral College as a 'scam' Trump slams Tlaib after press conference on Israel ban: I don't buy her tears Scaramucci calls on GOP to save country from Trump 'depredations' MORE (N.Y.), Ilhan OmarIlhan OmarMaher hits back at Tlaib: Does she 'want to boycott 93 percent of her own party?' 'The Simpsons' pokes fun at Trump's feud with 'the squad' Trump ramps up attacks on Tlaib MORE (Minn.), Rashida TlaibRashida Harbi TlaibMaher hits back at Tlaib: Does she 'want to boycott 93 percent of her own party?' 'The Simpsons' pokes fun at Trump's feud with 'the squad' Trump ramps up attacks on Tlaib MORE (Mich.) and Ayanna PressleyAyanna Pressley'The Simpsons' pokes fun at Trump's feud with 'the squad' Trump ramps up attacks on Tlaib Trump slams Tlaib after press conference on Israel ban: I don't buy her tears MORE (Mass.), the president said they should "go back and help fix the totally broken and crime infested places from which they came."  

All four have been outspoken critics of the Trump administration, and Omar and Tlaib in particular have questioned the relationship between the U.S. and Israel, prompting pushback from Republicans. All four are U.S. citizens, and only Omar was born outside the U.S.
 
Trump doubled down on his comments Monday during an event at the White House, denying that he was being racist and expressing no remorse when told that white nationalist groups found common cause with his message.

“It doesn’t concern me because many people agree with me,” Trump told reporters on the South Lawn of the White House during an event designed to highlight American manufacturing.
 
Republicans have largely remained silent about Trump's comments, which initially took place when they were scattered across the country over the weekend. 
 
 
"I’m going to be taking questions tomorrow after lunch at the stakeout. I’d be happy to respond then," he told a group of reporters. 
 
 
“Instead of sharing how the Democratic Party’s far-left, pro-socialist policies — not to mention the hateful language some of their members have used towards law enforcement and Jews — are wrong for the future of our nation, the President interjected with unacceptable personal attacks and racially offensive language,” Sen. Tim ScottTimothy (Tim) Eugene ScottGOP Sen. Tim Scott says if he runs in 2022 it will be his last race When it comes to student debt, it is time to talk solutions Democrats call for Senate to return to vote on gun reform after two deadly mass shootings MORE (S.C.), the only black Republican senator, said in a statement.

Schumer said he will follow in the footsteps of Speaker Nancy PelosiNancy PelosiGOP group calls on Republican senators to stand up to McConnell on election security in new ads The Hill's Morning Report - Trump hews to NRA on guns and eyes lower taxes Hobbled NRA shows strength with Trump MORE (D-Calif.), who plans to introduce a House resolution condemning Trump's tweets, and he urged Republicans to support it.

"Speaker Pelosi has said that the House will introduce a resolution denouncing the president's comments. Our intention is to do the same in the Senate. We'll see. We'll see just how many Republicans will sign on," he said.