President Trump’s reelection campaign is challenging a decision by Thursday’s presidential debate organizers to focus the discussion on a wider array of topics than initially agreed, charging the decision is “solely to insulate Biden from his own history.”

In a tweet Monday, Trump 2020 campaign manager Bill Stepien published a letter addressed to the Commission on Presidential Debates calling for Thursday’s event to focus on foreign policy in line with “long-standing custom, and as had been promised” by the commission.