"The announced hearing schedule for several nominees who have not completed the ethics review process is of great concern to me," wrote Walter M. Shaub, director of the Office of Government Ethics, in a letter to New York Sen. Chuck Schumer and Massachusetts Sen. Elizabeth Warren. "This schedule has created undue pressure on OGE's staff and agency ethics officials to rush through these important reviews."
Shaub, who was appointed by President Barack Obama, said his office hasn't received initial drafts from some nominees.
"I am not aware of any occasion in the four decades since OGE was established when the Senate held a confirmation hearing before the nominee had completed the ethics review process," he said.
However in 2001, the Senate Health, Education, Labor and Pensions Committee held a confirmation hearing on Education Secretary Rod Paige eight days before receiving his OGE paperwork.
The nominees in question, according to a Senate Democratic source, are Trump's pick to lead Department of Homeland Security, John Kelly; Education Secretary-designate Betsy DeVos; Commerce Secretary-designate Wilbur Ross; and Ben Carson, whom Trump has tapped to lead the Department of Housing and Urban Development.
Nominees who are appointed by the President to positions that require Senate confirmation have to obtain OGE's certification of their financial disclosure reports. And nominees must also "make current" their financial disclosure reports by the date of the hearing, added Shaub, who said it would be "cause for alarm" if the Senate proceeded with hearings before OGE has certified nominees' reports.
The letter was released by Schumer's office, and the Senate Democratic leader blasted Trump's transition team and Senate Republicans over the matter.
"The Office of Government Ethics letter makes crystal clear that the transition team's collusion with Senate Republicans to jam through these cabinet nominees before they've been thoroughly vetted is unprecedented," Schumer said. "The Senate and the American people deserve to know that these cabinet nominees have a plan to avoid any conflicts of interest, that they're working on behalf of the American people and not their own bottom line, and that they plan to fully comply with the law. Senate Republicans should heed the advice of this independent office and stop trying to jam through unvetted nominees."
Senate Majority Leader Mitch McConnell's office declined to comment Saturday.
The Trump transition team responded Saturday, saying all of the nominees are qualified and expressing disappointment in the push back from Democrats.
"President-elect Trump is putting together the most qualified administration in history and the transition process is currently running smoothly. In the midst of a historic election where Americans voted to drain the swamp, it is disappointing some have chosen to politicize the process in order to distract from important issues facing our country. This is a disservice to the country and is exactly why voters chose Donald J. Trump as their next president."