Context:

The GOP-led House Oversight Committee, chaired by James Comer, is investigating whether former President Joe Biden's aides were involved in concealing evidence of his mental decline and inappropriately using an autopen for decisions. Biden has countered these claims, stating he made all decisions regarding autopen pardons himself, while his allies have dismissed the investigation as partisan. Eight aides have already been interviewed, with some pleading the Fifth Amendment, while others provided limited or no information. Former aides like Neera Tanden and Kevin O'Connor have faced scrutiny over their interactions with Biden and the autopen process. Several more former senior White House officials are expected to appear before investigators in the coming weeks, as the probe continues to examine Biden's fitness for office during his term.

Dive Deeper:

• James Comer, chair of the House Oversight Committee, is leading an investigation into whether Joe Biden's aides concealed his mental decline and used an autopen without his knowledge for executive decisions.

• Biden asserts that he made every decision regarding the use of the autopen, specifically for pardons, and his allies have criticized the probe as a partisan attack by the GOP.

• Eight aides, including Neera Tanden and Kevin O'Connor, have been questioned, with some using the Fifth Amendment and others providing minimal information or denying detailed knowledge of Biden's actions.

• Former White House physician Kevin O'Connor was subpoenaed and questioned about potentially obscuring signs of Biden's aging and mental acuity, but he pleaded the Fifth during his brief appearance.

• Ashley Williams, a longtime Biden advisor, claimed she did not recall many specific instances when questioned about Biden's use of teleprompters and discussions regarding his cognitive abilities.

• Ron Klain, Biden's former chief of staff, admitted to the committee that Biden's memory had worsened but maintained he was still capable of governing, while also citing concerns from other political figures about Biden's viability.

• Steve Ricchetti defended Biden's capability as president during his lengthy interview, despite acknowledging his family's involvement with the Biden administration, and was present when Biden decided to exit the 2024 race.