Dozens of civil rights and pro-democracy organizations teamed up Wednesday to express opposition to President-elect Donald Trump’s push to use recess appointments to evade the Senate confirmation process for his political nominees, many of which have glaring conflicts of interest.

The 70 groups—including People For the American Way, Public Citizen, the Constitutional Accountability Center, and the NAACP—sent a letter to U.S. senators arguing that Senate confirmation procedures provide “crucial data” that helps lawmakers and the public “evaluate nominees’ fitness for the important positions to which they are nominated.”

“The framers of the Constitution included the requirement of Senate ‘Advice and Consent’ for high-ranking officers for a reason: The requirement can protect our freedom, just as the Bill of Rights does, by providing an indispensable check on presidential power,” reads the new letter. “None of that would happen with recess appointments. The American people would be kept in the dark.”

Since his victory in last month’s election, Trump has publicly expressed his desire to bypass the often time-consuming Senate confirmation process via recess appointments, which are allowed under the Constitution and have been used in the past by presidents of both parties. The need for Senate confirmation is already proving to be a significant obstacle for the incoming administration: Trump’s first attorney general nominee, Matt Gaetz, withdrew amid seemingly insurmountable Senate opposition, and Pentagon nominee Pete Hegseth appears to be on the ropes.

“Giving in to the president-elect’s demand for recess appointments under the current circumstances would dramatically depart from how important positions have always been filled at the start of an administration,” the groups wrote in their letter. “The confirmation process gathers important information that helps ensure that nominees who will be dangerous or ineffective for the American people are not confirmed and given great power, and that those who are confirmed meet at least a minimum standard of acceptability.”

“The American people deserve full vetting of every person selected to serve in our nation’s highest offices, and Trump’s nominees are no exception.”

Scholars argue recess appointments were intended as a way for presidents to appoint officials to key posts under unusual circumstances, not as an exploit for presidents whose nominees run up against significant opposition.

The Senate could prevent recess appointments by refusing to officially go on recess and making use of pro forma sessions, but incoming Senate Majority Leader John Thune (R-S.D.) has said that “we have to have all the options on the table” to push through Trump’s nominees.

“The American people deserve full vetting of every person selected to serve in our nation’s highest offices, and Trump’s nominees are no exception.”

Scholars argue recess appointments were intended as a way for presidents to appoint officials to key posts under unusual circumstances, not as an exploit for presidents whose nominees run up against significant opposition.

The Senate could prevent recess appointments by refusing to officially go on recess and making use of pro forma sessions, but incoming Senate Majority Leader John Thune (R-S.D.) has said that “we have to have all the options on the table” to push through Trump’s nominees.

Svante Myrick, president of People For the American Way, said in a statement Wednesday that “if you’re trying to ram through nominees without Senate and public scrutiny, it’s a pretty good guess that you have something to hide.”

“The American people deserve full vetting of every person selected to serve in our nation’s highest offices,” said Myrick, “and Trump’s nominees are no exception.”