Sen. David Perdue (R-Ga.) said on Monday that it's "outrageous" to call President TrumpDonald John TrumpDemocratic senator rips Trump's 'let them fight' remarks: 'Enough is enough' Warren warns Facebook may help reelect Trump 'and profit off of it' Trump touts Turkey cease-fire: 'Sometimes you have to let them fight' MORE's tweets telling four Democratic congresswomen of color to "go back" to their countries racist. 
 
"That's outrageous. Of course they're not racist," Perdue, a close Trump ally who is up for reelection in 2020, said when a reporter noted that some used that term to describe the president's rhetoric.
 
Perdue's comments came after Trump sparked widespread backlash among Democrats as well as a growing number of Republicans when he targeted a group of unidentified progressive congresswomen "who originally came from countries whose governments are a complete and total catastrophe."
 
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In the tweets, which appeared to be directed at Democratic Reps. Alexandria Ocasio-CortezAlexandria Ocasio-CortezOcasio-Cortez mourns Cummings: 'A devastating loss for our country' Booker endorses Lipinski challenger Lawmakers from both sides of the aisle mourn Cummings MORE (N.Y.), Ilhan OmarIlhan OmarKrystal Ball reacts to Ocasio-Cortez endorsing Sanders: 'Class power over girl power' The Hill's Morning Report - Tempers boil over at the White House Krystal Ball on Sanders debate performance: 'He absolutely hit it out of the park' MORE (Minn.), Rashida TlaibRashida Harbi TlaibOcasio-Cortez mourns Cummings: 'A devastating loss for our country' Elijah Cummings, Democratic chairman and powerful Trump critic, dies at 68 Krystal Ball on Sanders debate performance: 'He absolutely hit it out of the park' MORE (Mich.) and Ayanna PressleyAyanna PressleyOcasio-Cortez mourns Cummings: 'A devastating loss for our country' Lawmakers from both sides of the aisle mourn Cummings Omar endorses Sanders presidential bid MORE (Mass.), the president said they should "go back and help fix the totally broken and crime infested places from which they came."  
 
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.
 
 
Other Senate Republicans stopped short of calling Trump's remarks racist. 
 
Sen. Susan CollinsSusan Margaret CollinsOvernight Energy: Perry to step down as Energy secretary | Future of big-game hunting council up in the air | Dems lose vote against EPA power plant rule Overnight Defense — Presented by Boeing — Pence says Turkey agrees to ceasefire | Senators vow to move forward with Turkey sanctions | Mulvaney walks back comments tying Ukraine aid to 2016 probe On The Money: Senate fails to override Trump veto over border emergency | Trump resort to host G-7 next year | Senators to push Turkey sanctions despite ceasefire | McConnell tees up funding votes MORE (R-Maine), who is up for reelection in 2020, urged Trump to delete his tweets. Sen. Lisa MurkowskiLisa Ann MurkowskiOvernight Defense — Presented by Boeing — Pence says Turkey agrees to ceasefire | Senators vow to move forward with Turkey sanctions | Mulvaney walks back comments tying Ukraine aid to 2016 probe On The Money: Senate fails to override Trump veto over border emergency | Trump resort to host G-7 next year | Senators to push Turkey sanctions despite ceasefire | McConnell tees up funding votes Senate fails to override Trump veto over emergency declaration MORE (R-Alaska) called his comments "spiteful," and Sen. Lindsey GrahamLindsey Olin GrahamPelosi, Schumer hit 'flailing' Trump over 'sham ceasefire' deal Pompeo to meet Netanyahu as US alliances questioned Overnight Defense — Presented by Boeing — Pence says Turkey agrees to ceasefire | Senators vow to move forward with Turkey sanctions | Mulvaney walks back comments tying Ukraine aid to 2016 probe MORE (R-S.C.) urged him to avoid personal attacks. 
 
 
"Identify politics is a poison. It's toxic. ... The president shouldn't have written that. I think it damages him. It damages the country," he said. 
 
When a reporter noted that if another individual made comments similar to Trump's they would be viewed as racist, Rubio added, "Most certainly I think people could take it that way, be offended by it." 
 
 
"I …  actually, honestly, haven't read anything except what you all have reported. But the reality is that I want to shift back onto the issues," Tillis said. 
 
Pressed about whether he thought Trump's tweets were racist, Tillis added, "I literally don't go on Twitter."