The group – three of whom were born in the US – are of Hispanic, Arab, Somali and African-American descent.
In a rare move, Trump was rebuked by the Democratic-controlled House of Representatives on Tuesday for “racist comments” against the women, who are known as the “Squad.”
The following day chants of “Send her back!” broke out at the president’s “Make America Great Again” rally in Greenville, North Carolina, when he again attacked the women.
To the delight of his thousands of supporters, Trump described Omar and the other Democrats as “left-wing ideologues (who) see our nation as a force of evil.”
Speech paused for chants
Trump later said there was “great energy” at the rally but claimed he was not pleased by the taunts.
“I was not happy when I heard that chant,” he said. “I didn’t like that they did it, and I started speaking quickly” to move on with his speech.