Former Rep. Joe Walsh (R-Ill.) on Sunday ripped White House senior policy adviser Stephen Miller for his exchange earlier in the day with CNN host Jake Tapper, saying he was on the network to “filibuster and hurl personal insults.”

“Miller looked small. Tapper looked professional. I like Stephen Miller, but he was afraid to debate Tapper this morning. Which is why he filibustered,” Walsh tweeted.

Stephen Miller was there to filibuster and hurl personal insults.@jaketapper was there to ask questions and dialogue.



Miller looked small. Tapper looked professional.



I like Stephen Miller, but he was afraid to debate Tapper this morning. Which is why he filibustered. — Joe Walsh (@WalshFreedom) January 7, 2018

Tapper on Sunday cut off his interview with Miller, as the two sparred about President Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE and the news network.

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Miller spent a good portion of the interview defending Trump and bashing the network, and Tapper eventually cut him off, suggesting Trump was the only viewer Miller cared about.

"I think I’ve wasted enough of my viewers’ time. Thank you, Stephen,” Tapper added as he ended the interview.

In a tweet following the exchange, Trump said Tapper was "destroyed" in the interview.

Walsh, who hosts a conservative radio show, served one term in the House of Representatives. He has recently been critical of Republicans for attacking special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE.