Rep. Devin Nunes lashed out at the media on Sunday as he faced criticism — and a potential ethics probe — for his alleged role in helping President Donald Trump dig up dirt on political rival Joe Biden.

"It's not okay to work with someone who's been indicted, to build a media narrative to try to dirty up the people who are doing the work on behalf of the American people," the California Republican said via telephone on "Sunday Morning Futures" on Fox News.

Lev Parnas, who worked with Trump attorney Rudy Giuliani to push claims of Democratic corruption in Ukraine, is prepared to testify under oath that Nunes — one of Trump's loudest defenders in Congress — participated in meetings in Europe focused on Biden, the Ukrainian-born American's lawyer told CNN on Friday.