Watergate reporter Carl Bernstein claims Biden’s staffers have witnessed up to 20 ‘marked incidence of cognitive decline and physical infirmity’ in the ailing president in the last 18 months [Video]

Carl Bernstein claims Biden White House insiders have told him that the president’s visibly ailing health at the first debate Thursday has been seen on numerous occasions in the past 18 months. 

The torturous 90-minute debate saw the president frequently lose his train of thought, trail off mid-sentence and mix up topics, prompting a cacophony of calls from politicians and pundits for the 81-year-old to step down. 

The performance has sparked an unprecedented panic in the party, leading many to wonder if Biden, 81, should drop out or even resign.

Bernstein, 80, is a longtime journalistic icon in Washington, having broken the Watergate scandal that took down Richard Nixon 50 years ago.

While he told Anderson Cooper Biden was ‘at his absolute best’ during his brief speech in response to the Supreme Courtruling on presidential immunity, his advisors and staffers who love and admire the president say ‘in the last six months, particularly, there has been a marked incidents of cognitive …