Vermonters joined protestors across the country Monday to urge their U.S. senators to reject some of President-elect Donald Trump’s cabinet nominees.

Participants at the rally, held by 350 Vermont, dropped off petition letters to Senators Bernie Sanders (I – Vt.) and Patrick Leahy (D – Vt.) offices in Burlington.

The Senate confirmation hearings begin Tuesday.

Monday’s nationwide “Day of Denial” rallies were focused on nominees who protestors claim are climate change deniers or have acted in a way that harms the environment.

Protestors want the U.S. senators to reject Trump’s nominees including Secretary of State nominee Rex Tillerson, Environmental Protection Agency administrator nominee Scott Pruitt and Department of Energy secretary nominee Rick Perry.

“Reject people who have turned their back on climate science and who are clearly in positions that they are going to use to advance their own interests,” said Keri Ellis, who helped organize the event.

“What Senator Leahy will do and looks forward to is going to through the committee process where they hear from the nominees and he will be able to share the questions and concerns that he has,” said John Tracy, Sen. Leahy’s state director, to the crowd. “He’ll do his due diligence, as he always has, as a member of the senate, to probe, ask the questions that he feels need to be added and vote accordingly. He’s looking forward to that process. He does firmly understand the concerns.”

The ralliers in Vermont thanked both U.S. senators for their commitment to the environment and the fight against climate change.