Two Democratic members of the House of Representatives are under review by the House Ethics Committee for alleged wrongdoing.

Rep. Ben Ray Lujan (D., N.M.) and Rep. John Conyers (D., Mich.) are both being reviewed by the committee for different issues, Politico reports.

Lujan is being investigated in connection with the Democratic sit-in on the House floor a year ago. Lujan is being accused of having his campaign profit off the protest by using images of himself on the floor in campaign donation solicitations. Using any image of a member on the House floor for campaign purposes is illegal.

The complaint against Lujan was brought by the Foundation for Accountability and Civic Trust (FACT). Lujan's communications director, Joe Shoemaker, pushed back against FACT's accusation in a statement.

"This announcement is the result of a frivolous complaint, filed by a highly partisan outside group about activities during the sit-in last year—a complaint that is without merit," Shoemaker's statement said. "Congressman Luján is committed to abiding by House rules, is confident he has done so in this case, and looks forward to a timely resolution by the Ethics Committee."

Conyers' case involves his former top aide, Cynthia Martin. Martin allegedly refused to return $16,500 that was mistakenly routed to her bank account. Martin was charged and pled guilty to a misdemeanor and was placed on leave. The Committee is reviewing her departure from Conyers' office.

"From April to August 2016, Cynthia Martin received compensation from the House of Representatives at a time when she may no longer have been working for the House," the complaint against Martin said. "If Ms. Martin accepted compensation that was not commensurate with the work she was performing, then she may have violated House rules and standards of conduct."

Rep. John Lewis' (D., Ga.) chief of staff, Michael Collins, is under investigation for serving on Lewis' congressional staff and serving as Lewis' campaign treasurer at the same time, which is against House rules.

All of the cases have 45 days from Monday for the Committee to make a decision on how to proceed further.