Anonymous Democratic senator says everyone's known for years Biden has mental lapses

Anonymous Democratic lawmakers admitted that President Biden has long shown signs of cognitive decline in their interactions with him, as he faces increasing pressure to drop out of the race following his shaky debate performance.

"The country saw [at the debate] what those of us who have had personal interactions with him have all known for the last 2½ years," one Democratic senator told NBC News.

Biden's halting performance at the debate last week reinforced concerns about his age...