House Oversight Chairman Elijah Cummings notified Attorney General William Barr and Commerce Secretary Wilbur Ross that his committee is moving forward with a vote to hold them in contempt of Congress.

In a pair of letters sent Monday, the Maryland Democrat said the vote will be scheduled due to their failure to comply with congressional subpoenas issued more than two months ago regarding a citizenship question was added the 2020 Census.

“Unfortunately, your actions are part of a pattern. The Trump Administration has been engaged in one of the most unprecedented cover-ups since Watergate, extending from the White House to multiple federal agencies and departments of the government and across numerous investigations,” Cummings wrote to Barr and Ross.

On Thursday, the New York Times reported Republican consultant Thomas Hofeller conducted a study that concluded adding a citizenship question would help Republicans better gerrymander districts to thwart Democrats. Before his death, Hofeller pushed the Trump transition team to consider such a question and then wrote a portion of the Justice Department's draft letter that said it would help enforce the 1965 Voting Rights Act.

“The tactics of this cover-up are now clear,” Cummings said. “The Administration has been challenging Congress’ core authority to conduct oversight under the Constitution, questioning the legislative bases for congressional inquiries, objecting to committee rules and precedents that have been in place for decades under both Republican and Democratic leadership, and making baseless legal arguments to avoid producing documents and testimony.”

The contempt votes could be postponed if Barr and Ross choose to comply with the subpoenas by June 6.

A Commerce Department representative told the Washington Examiner the agency has already provided thousands of pages of documents to the panel.

"The Department of Commerce has worked in good faith with the Committee and has delivered nearly 14,000 pages of documents responsive to the Committee’s extensive request," the representative said. "The Secretary himself voluntarily testified for nearly seven hours before the Committee."

"The Committee has taken this extraordinary step to compel production of documents protected by longstanding and well-settled privileges, including the government’s right to protect confidential attorney-client and deliberative communications, which has been upheld in court," the representative said. "To any objective observer, it is abundantly clear that the Committee’s intent is not to find facts, but to desperately and improperly influence the Supreme Court with mere insinuations and conspiracy theories."