President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE reportedly referred to Rep. Jerrold Nadler Jerrold (Jerry) Lewis NadlerSchumer: 'Nothing is off the table' if GOP moves forward with Ginsburg replacement Top Democrats call for DOJ watchdog to probe Barr over possible 2020 election influence House passes bill to protect pregnant workers MORE (D-N.Y.) as "fat Jerry" in a recent meeting with a group of House Republicans at the White House.

The Washington Post reported Monday that Trump made the remark last month while suggesting that Nadler is overweight despite having weight-loss surgery years ago.

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“I’ve been battling Nadler for years,” Trump added.

The GOP lawmakers were embarrassed by Trump's comments, the Post reported, citing several people who were at the meeting.

Nadler, the chairman of the House Judiciary Committee, has emerged as a top adversary to Trump in the new Congress as he has led an investigation into the president.

Trump has privately complained to aides about Nadler and his investigation, claiming that the congressman is out to get him, according to the Post.

The Post also noted that the feud between Trump and Nadler goes back several decades. The feud, which began when Nadler was a New York state assemblyman, stemmed from Nadler opposing a development project that Trump planned in New York City, according to the Post.