U.S. Senate candidates Dr. Mehmet Oz and Herschel Walker on Wednesday were told to resign from the President’s Council on Sports, Fitness and Nutrition or their positions would be “terminated.”

The two men, both named to the council by then-President Donald Trump, received letters from Gautam Raghaven, assistant to President Joe Biden, informing them of Biden’s decision.

In his letter to Oz, dated Wednesday date, Raghaven wrote: On behalf of President Biden, I am writing to you to request your resignationas a Member of the President’s Council on Sports, Fitness & Nutrition. Please submit your resignation to me by the close of business today. Should be not receive your resignation, your position with the Council will be terminated effective 6:00 pm tonight.