Joe Biden’s White House physician on Wednesday declined to answer questions during a closed-door deposition with the House Oversight Committee, invoking his Fifth Amendment right as the Republican-led panel pushes forward in its probe of the former president’s mental fitness and decline.

Republican members of the House Oversight and Government Reform Committee balk at the refusal. Democrats say Congress should focus on the health of the people.

Kevin O'Connor, former President Joe Biden 's physician, is set to testify before the House Oversight Committee about Biden's health in office after President Donald Trump waived executive privilege for O'Connor, according to a letter obtained by Newsweek.