Donald Trump has mocked Alexandria Ocasio-Cortez's qualifications, asking the crowd at his Pennsylvania rally on Monday afternoon whether she had been to college.
Ocasio-Cortez, 31, is a perennial target for the president, who frequently attacks her left-leaning policies.
On Monday, talking about her environmental proposals, which Joe Biden is partially incorporating into his own plan, Trump again repeated the figure of $100 trillion to estimate how much the Green New Deal would cost - a figure the Democrats say not accurate.
'We'd lose a fortune at $100 trillion,' said Trump.
Donald Trump in Pennsylvania mockingly asked the crowd about Ocasio-Cortez's degree
'She did go to college, right?' he asked the crowd in Martinsburg, Pennsylvania
The Congresswoman, pictured voting on Sunday, graduated from Boston University in 2011
'Made up by AOC plus three,' referring to 'The Squad': Ocasio-Cortez, Rashida Tlaib, Ilhan Omar and Ayanna Pressley.
He added: 'A great student of the environment. I don't think she ever took an environmental course in college.
'She did go to college, right?'
Ocasio-Cortez graduated from Boston University in 2011 with a BA in International Relations and Economics.
She said his words were 'classist and disgusting'.
The New York congresswoman replied: 'I could say yes, but who cares? Plenty of people without college degrees could run this country better than Trump ever has.
'As much as GOP cry about “elites,” they're the ones who constantly mock food service workers, people w/o degrees, etc as dumb. It’s classist & disgusting.'
She continued: 'I've hired people w/o degrees who have done incredible, effective, & strategic work.
'The more college costs soar, the more degrees become a measure privilege than competence.
'Our country would be better off if we made public colleges tuition-free & cancelled student loan debt.'
The president has a long history of ridiculing Ocasio-Cortez, the youngest woman ever elected to Congress.
In April 2019 he called her a 'young bartender' during a fundraising dinner for the National Republican Congressional Committee.
After college she interned in Senator Ted Kennedy's office, and became a community activist.
Before university, Ocasio-Cortez was a high school student with an interest in microbiology and space.
She won second place in the microbiology section of the Intel International Science and Engineering Fair.
In a show of appreciation for her efforts, the MIT Lincoln Laboratory named a small asteroid after her: 23238 Ocasio-Cortez