Government officials handling state secrets get dementia. What now? RAND Corp. identifies the potential problem and how to handle it.

Newsom told Chuck Todd a senator would be appointed on an interim basis while the current primary to replace Feinstein plays out.

Reps. Alexandria Ocasio-Cortez, Rashida Tlaib and Ro Khanna have been among House Democrats to call on Feinstein to step down.

The oldest member of Congress, Feinstein has faced calls to step down in recent months as her health has deteriorated.

The dispute, nasty thought it may be on its own, plays into a wider narrative about Feinstein's capabilities.

Democratic Sen. Dianne Feinstein needed help voting on a bill during a committee hearing on Thursday.

The Democrat is reportedly "so fed-up with her persistence that he has given instructions that her calls are not to be received."

A veritable MLB legend could be on the verge of throwing his name into what is shaping up to be an explosive Senate race.

"They push her wheelchair, remind her how and when she should vote and step in to explain what is happening when she grows confused."

A winding road of complex political choices could lead to Oprah Winfrey becoming a U.S. senator, reports say.