Portland hotelier Gordon Sondland, an ambassador who provided key and colorful testimony in President Trump’s first impeachment hearings, is suing former U.S. Secretary of State Mike Pompeo to recover legal fees.

The Washington Post reported Monday that Sondland filed a $1.8 million federal lawsuit in U.S. District Court for the District of Columbia. Sondland’s attorneys say the Trump administration paid only a small part of the hotel owner’s legal bills related to the impeachment inquiry.

Sondland is founder and chairman of the Provenance hotel group, which operates 13 hotels across the country, including Portland’s Heathman, Hotel Delux, the Sentinel, Hotel Lucia and the Woodlark. He was a major contributor to President Donald Trump’s inauguration fund, and was named ambassador to the European Union.

Sondland’s November 2019 testimony to the House Intelligence Impeachment Inquiry outlined a link between presidential attorney Rudy Giuliani in Ukraine and the White House in an attempt to get information on Hunter Biden’s activities as a member of the Burisma energy company board.

“I know that members of this committee frequently frame these complicated issues in the form of a simple question: Was there a quid pro quo?” Sondland told the committee in his Nov. 20 testimony. “As I testified previously, with regard to the requested White House call and the White House meeting, the answer is yes. Mr. Giuliani conveyed to Secretary (Rick) Perry, Ambassador (Kurt) Volker and others that President Trump wanted a public statement from President Zelensky committing to investigations of Burisma and the 2016 election.”

Sondland was dismissed as ambassador after President Trump was acquitted in the U.S. Senate.