Former Trump campaign adviser Carter Page is sending signals he may not voluntarily give testimony or documentation to the Senate Intelligence Committee, although he and his lawyers had previously indicated he would likely cooperate.

Page sent a letter to the Senate Intelligence Committee in late April informing them if they wanted to review details about his Russian dealings, the committee members should ask former President Barack Obama, according to CNN. In other parts of the letter, it becomes clear that Page was directly thumbing his nose at the government because he had been the target of a Foreign Intelligence Surveillance Act warrant in 2016, according to published reports.

Page was briefly a foreign policy adviser to the Trump campaign.

His letter earned a rebuke from Committee Chairman Richard Burr of North Carolina and ranking Democrat Mark Warner from Virginia, in which they said, "Should Mr. Page choose to not provide the material requested [by the deadline], the committee will consider its next steps at that time."

"[I]t is our expectation that Mr. Page will live up to his publicly-expressed cooperation with our effort," Warner and Burr said.

Page's willingness to cooperate may have changed after receiving a letter from the committee on April 28 of this year which asked him to hand over copies of emails, texts and phone records related to any contact with a Russian official for an 18 month time span beginning in mid 2015 and continuing all the way up to President Trump's inauguration day in 2017. The letter, first reported by the New York Times, also asked Page to detail all meetings he had with any Russian officials in those months and asked him to provide detailed information on his financial and real estate holdings.

Page has been outspoken about his involvement with Russian officials, repeatedly claiming he did nothing wrong and claiming he will be fully exonerated when all the evidence is known. He was one of four persons involved with the Trump campaign who freely volunteered to give testimony to either the House or Senate intelligence committees, along with Roger Stone, Paul Manafort, and President Trump's son-in-law Jared Kushner, as the committees investigate Russian meddling in the 2016 election.