The unusual warning about a potential incoming senator was revealed Monday in a letter sent Friday by Rep. Gwen Moore (D-Wis.) to the administrative body that runs the Senate, the office of the Sergeant at Arms and Doorkeeper, on the eve of Alabama’s special election.

The Wisconsin lawmaker said she was concerned about Moore’s potential interactions with the high school juniors who make up the Senate’s pages, and asked whether the office was preparing for his possible election.

“I write you today to share my urgent concern regarding the threat to the safety of the young men and women working in the United States Senate Page Program if Roy Moore becomes the U.S. Senator,” Gwen Moore wrote. “I would like to know what preventative steps are being undertaken to safeguard Senate Pages from predatory conduct of U.S. Senators and Senate staff.”