My it's Diane, on my mind, Donald Trump's family history with Alzheimer's disease. Donald Trump has made cognitive

a major issue in this year's presidential race. He accuses accuses by the impairment, while boasting of his own brilliance.

But this line of attack is nothing new.

He is long accused rivals of mental frailty,

weaponizing the issue of dementia for his own game.

Washington Post, the investigative reporter Michael Kranich says

Trump's fixation on mental fitness came after years of watching his

father's own decline with Alzheimer's disease.

Donald walked away, was very impatient, you know, just felt very uncomfortable with the situation and his father's condition.

Michael Granish joins me to discuss Fred Trump's dementia and questions we should be asking

of our candidates when it comes to cognitive ability.

Michael, I want to start by asking you why you and your editors decided to move forward with his peace.

Yes, well Diane, you know, President Trump has made cognitive and physical mental health

and issue in this campaign. He has said that Joe Biden is quote cognitively impaired.

So our view is that President Trump has injected that squarely into the

middle of this campaign. Clearly if you look at the polls voters, majority

voters have concerns about both candidates, about their stamina, all the sorts of way this has been checked, physical, mental.

So clearly, this has become a central issue in the campaign.

And that's the way I approached it, just like I might approach if I was assigned to do a story

about their economic plans or whatever, this is a story that clearly is front and center for voters and for the candidates themselves.

So the idea here was let's look at the history of Trump.

There's been a lot of stories about Biden.

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