Kelly called Warren 'impolite,' 'arrogant:' report

White House chief of staff John KellyJohn Francis KellyMORE ripped into Massachusetts Sen. Elizabeth WarrenElizabeth Ann WarrenThe Memo: Trump faces steep climb to reelection Feehery: A whole new season of 'Game of Thrones' Overnight Energy: Warren wants Dems to hold climate-focused debate | Klobuchar joins candidates rejecting fossil fuel money | 2020 contender Bennet offers climate plan MORE (D) in an email to a staffer last year after a conversation with the senator concerning President TrumpDonald John TrumpThe Hill's Morning Report - White House, Congress: Urgency of now around budget GOP presses Trump to make a deal on spending Democrats wary of handing Trump a win on infrastructure MORE's travel ban, BuzzFeed reports.

In an email chain following a conversation with Warren about several constituents detained in Boston's Logan Airport under the travel ban despite having visas, Kelly, then the Secretary of the Department of Homeland Security, described Warren as "arrogant" and "impolite" to a subordinate.

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“Absolutely most insulting conversation I have ever had with anyone,” wrote Kelly in the email obtained by BuzzFeed News.

"What an impolite arrogant woman. She immediately began insulting our people accusing them of not following the court order, insulting and abusive behavior towards those covered by the pause, blah blah blah," he added, apparently mocking Warren's concerns.

Kevin Carroll, the department's senior counsel, responded. “Too bad Senate Majority Leader McConnell couldn’t order her to be quiet again!" he said, referring to Senate Majority Leader Mitch McConnellAddison (Mitch) Mitchell McConnellThe Hill's Morning Report - White House, Congress: Urgency of now around budget GOP presses Trump to make a deal on spending Overnight Health Care — Presented by PCMA — McConnell, Kaine offer bill to raise tobacco buying age to 21 | Measles outbreak spreads to 24 states | Pro-ObamaCare group launches ad blitz to protect Dems MORE's (R-Ky.) use of Senate rules to silence the senator during a speech, a moment that quickly went viral.

"Warren is running for president so early, trying too hard, and chasing bad pitches,” Carroll added.

Warren's office and the White House did not immediately respond to requests for comment Thursday night on the emails. Kelly would be named White House chief of staff following the exit of Reince PriebusReinhold (Reince) Richard PriebusMueller didn't want Comey memos released out of fear Trump, others would change stories Forget the spin: Five unrefuted Mueller Report revelations Dems plot aggressive post-Mueller moves, beginning with McGahn MORE in July of that year.

The Massachusetts Democrat is a frequent target of Trump, who often attacks the liberal senator with the racially-charged "Pocahontas" epithet referring to her claims of Native American ancestry.