The Somalia-born congresswoman went further and accused Trump of "spewing his fascist ideology on stage" - referring to the scandalous rally in North Carolina on Wednesday, in which a crowd of the president's supporters started chanting "send her back" during his speech. When pressed on the idea that they were basically echoing his own words, Trump backpedaled even further, trying to distance himself. "I would say that I was not happy with it".
"I deeply disagree with the extreme left & have been disgusted by their tone", said Representative Adam Kinzinger of IL.
She is was one of four liberal politicians - all women of colour - that Mr Trump attacked as un-American, saying they were welcome to leave the country if they did not like his policies on issues such as immigration and defending Israel.
Somali-born Omar and three other non-white Democrat Congresswomen - Alexandria Ocasio-Cortez, Ayanna Pressley and Rashida Tlaib - have been criticised by Trump recently in a series of alleged racist tweets.
All four are known as sharp critics of both Trump and the Democratic leadership in the U.S. House of Representatives.
The group of suburban Republicans, mostly around retirement age in collared shirts and slacks, showed none of the hostility to the news media common at Trump's rallies and welcomed a Reuters reporter's questions about the political maelstrom swirling after what Elise Kay, 61, called the president's latest tweetstorm "kerfuffle". (Once, he did so in ALL CAPS.) So there appears to be some line of what's acceptable or not in the president's view, but it's relative. Walker said he cautioned Pence that attention to the chant could distract voters next year from the economy and other themes Republicans want to emphasize.
That should come as no surprise.
Mr Trump had tweeted over the weekend that the four progressive representatives should "go back" where they came from, even though all are USA citizens and three are United States born.
And that could be why such a high percentage of Americans strongly disapprove of the job the president is doing.
"Nothing this president says should be taken to heart".
However, at the rally, Trump had intensified his vilification of the four congresswomen and underscored that such attacks will be a key part of his strategy for winning re-election in 2020.
"They don't love our country", he said.
He noted this week that his attack "forced" Democrats to rally around the women.
"So these congresswomen, their comments are helping to fuel the rise of a unsafe, militant hard left", Trump told a rally of supporters in Greenville.
On Thursday, Trump's campaign was more overt in its intention. "These women have said disgusting things about our country and the people of our country". "They are all the same".
Besides Omar, Trump has also been criticizing Democratic Reps.
To the delight of his thousands of supporters in Greenville, Trump described Omar and the other three as "left-wing ideologues (who) see our nation as a force of evil". Instead, he praised the nearly unanimous support he won from Republican lawmakers who opposed the resolution, only four of whom voted with Democrats against him.
In 2017, Kobach headed Trump's now-defunct Presidential Advisory Commission on Election Integrity, which uncovered no evidence to support the administration's claims of widespread voter fraud in the 2016 election.
That support from independents helped propel Democrats to take back the House in 2018, and independents are especially vital for Republicans to win in presidential elections.
However, only three out of 10 independents said they approved of Trump, down from four out of 10 last week.