Two members of President Trump's voter fraud commission are criticizing the commission for lack of transparency.

"I am seeking information because I lack it," Maine Secretary of State Matthew Dunlap wrote in a letter last week asking for information regarding the commission's agenda and other correspondence, according to an Associated Press report.

Dunlap said he had not received any updates about the commission since its second and most recent meeting, held Sept. 12 in New Hampshire.

"I am in a position where I feel compelled to inquire after the work of the commission upon which I am sworn to serve, and am yet completely uninformed as to its activities," Dunlap wrote in the Oct. 17 letter, which was addressed to the commission's executive director, Andrew Kossack.

The commission has been critized in the past by Democratic members of Congress, including Senate Minority Leader Chuck Schumer. Last week, Democratic Sens. Michael Bennet, Cory Booker, and Amy Klobuchar wrote the Government Accountability Office seeking an investigation into the commission citing lack responsiveness and transparency.

Another member of the commission, Jefferson County, Ala., Probate Judge Alan King, said he sent a similar letter last week, according to the report.

Dunlap and King are both Democrats.

The commission previously faced criticism after one of its leaders, Kansas Secretary of State Kris Kobach, a proponent of strict voter ID laws, requested voter data from every state and the District of Columbia, including the names, addresses, birthdays, the last four digits of Social Security numbers if they were available, voter history, and other personal information.

Numerous states said they won't comply with the commission's request for voter data.

Trump established the Presidential Advisory Commission on Election Integrity after alleging that "millions" of illegal votes were cast in the 2016 election, though experts say there has been no evidence of widespread voter fraud presented. Republican strategists have also spoken out against the commission.