Accusations have percolated for months on social media and right-wing websites, as well as among Trump’s allies in Congress.

Former President Joe Biden left office in January, but questions about his mental acuity and decline while in office continue to mount. Here's where the investigations stand ...

The House Oversight Committee's investigation alleges Biden was not mentally capable of leading the country during his ...

A former senior adviser to President Joe Biden has agreed to testify before the House Oversight Committee in a closed-door ...

Four senior officials in former President Joe Biden's administration are set to testify in a House probe into Biden's health ...

Four ex-staffers to former President Biden have agreed to testify to the House Oversight Committee as part of a Republican ...

The House Oversight Committee says it will receive testimonies from four Biden aides regarding alleged mental decline ...

GOP-led inquiries in Congress, the White House, and at the DOJ are escalating into whether former President Joe Biden was fit ...