Judicial Watch announced Tuesday it has filed suit asking a federal court to order the Department of Justice (DOJ) to produce all emails to and from Andrew Weissmann, special counsel Robert Mueller’s lead prosecutor in the Russia collusion investigation.

“Andrew Weissmann is demonstrably an anti-Trump/pro-Clinton activist,” said Judicial Watch President Tom Fitton.

“And it is suspicious the Justice Department refuses to turn over any Weissmann text messages, especially given the anti-Trump bias documented in the FBI’s Strzok-Page texts,” he added.

More from LifeZette TV

MORE NEWS: Trump Praying For Officers Shot In Violent Louisville Protests

The suit was filed in the U.S. District Court for the District of Columbia because DOJ failed to respond to the nonprofit’s Dec. 15, 2017, Freedom of Information Act request seeking:

All text messages sent to or from DOJ official Andrew Weissmann regarding Donald Trump and/or Hillary Clinton between August 8, 2016, and the present.

All calendar entries, whether in physical or electronic form, for Weissmann from Jan. 1, 2015, to the present.

Weissmann has been an unusually high-profile DOJ prosecutor with significant indicators of having significant partisan biases.

Do you agree that protesting is acceptable, but rioting is not? Yes No Email Address (required) By completing the poll, you agree to receive emails from LifeZette and that you've read and agree to our privacy policy and legal statement Results Vote

Judicial Watch previously obtained a message in which Weissman praised then-acting Attorney General Sally Yates for publicly refusing to enforce President Donald Trump’s proposed travel ban of individuals from seven countries with high levels of terrorist activities.

“I am so proud. And in awe. Thank you so much. All my deepest respects,” Weissmann told Yates about her May 2017 decision. Yates was appointed by former President Barack Obama as deputy attorney general and took over as the acting attorney general following Loretta Lynch’s departure from the top job.

Weissmann also attended what had been intended as the election night victory party for 2016 Democratic presidential nominee Hillary Clinton, according to The Wall Street Journal.

MORE NEWS: Questionable! More States Add Extra Days To Count Votes for Election 2020

“Weissmann donated $4,300 total to the Obama Victory Fund in 2008, $2,300 to the Clinton campaign in 2007, and the Democratic National Committee in 2006,” The Washington Post reported.

Senior editor Mark Tapscott can be reached at [email protected]. Follow him on Twitter.​