Here's a timeline of the escalating war of words between Trump and Ilhan Omar

"What she said is so deep-seated in her heart that her lame apology ... was just not appropriate," Trump said on February 12. "I think she should resign from Congress, frankly."

And Trump condemned House Democrats for failing to "take a stand against anti-Semitism in their conference."

President Trump says Rep. Omar's apology for Israel tweets was 'lame' https://t.co/Pux5QOncwm pic.twitter.com/JNNBi5r5OX

"You have trafficked in hate your whole life – against Jews, Muslims, Indigenous, immigrants, black people and more," Omar said in a tweet on February 13. "I learned from people impacted by my words. When will you?"

Omar's February 27 comment was condemned by Republicans and many Democrats, who said the criticism played into old anti-Semitic tropes and charges of "dual loyalty" long made against Jewish-Americans.

After Trump's video attack, dozens of Democrats — including party leadership — accused Trump of inciting violence against Omar, who has already been targeted with death threats.

On Sunday, House Speaker Nancy Pelosi said that the US Capitol Police and the House sergeant-at-arms "are conducting a security assessment to safeguard" the congresswomen and her family and staffers following the president's attack.

"I stand undeterred to continue fighting for equal opportunity in our pursuit of happiness for all Americans," Omar wrote in a series of tweets on April 13th. "I did not run for Congress to be silent. Thank you for standing with me — against an administration that ran on banning Muslims from this country — to fight for the America we all deserve."

Trump said he had no second thoughts about tweeting the video attack on Omar, despite the the congresswoman's claim that death threats against her have surged.

"She's been very disrespectful to this country, she's been very disrespectful to, frankly, Israel, she is somebody that I think doesn't understand life," Trump told a local reporter in Minneapolis on Monday night. "I think she's extremely unpatriotic and extremely disrespectful to our country."

Trump added that Omar's "got a way about her that's very, very bad I think for our country."

Trump again attacked Omar, and targeted House Speaker Nancy Pelosi for calling for increased security for the congresswoman in the wake of Trump's attack.

"Before Nancy, who has lost all control of Congress and is getting nothing done, decides to defend her leader, Rep. Omar, she should look at the anti-Semitic, anti-Israel and ungrateful U.S. HATE statements Omar has made," Trump tweeted on Monday. "She is out of control, except for her control of Nancy!"

For better or worse, the controversy has lifted Omar's national profile. She raised almost $830,000 in the first quarter of 2019 for her 2020 re-election campaign, according to campaign finance reports released this week.