Rep. Ted Lieu (D-Calif.) vowed that Democrats would "destroy" the Trump administration in court and haul Hope Hicks back before Congress to answer questions she avoided on Wednesday.

Lieu, who is a member of the House Judiciary Committee, was speaking to Erin Burnett on CNN when he made the promise.

"They wouldn't even ask us where her desk was located," Lieu said of the testimony by President Donald Trump's former White House communications director.

Lieu excoriated the White House for claiming "absolute immunity" for Hicks, and objected to the presence of White House legal counsel at the hearing.

The White House said there was no legal compulsion for Hicks to answer questions about her time at the White House, nor during the transitional period between the election and the inauguration.

Lieu promised to sue the White House and force Hicks to answer questions she avoided.

"We're sending this up for litigation, they're going to get destroyed in court, we're gonna call Hope Hicks back," he said.

Lieu said that Hicks and the White House attorney objected 155 times to questioning from the House Judiciary Committee.

"So essentially all she did is basically jack up her legal fees," he added, "she can't escape answering these questions in the future."

"I am watching Obstruction of Justice in action," he tweeted on Wednesday during the testimony.

Here's the video of Lieu's promise: