yes he mentions this he tells us in 'Killing Reagan'
he states Nancy was the Jill Biden of the 80s.
I read Killing Crazy Horse and Killing Patten. both really good easy reads.
I am waiting to get his book coming out September I think about rating the Presidents.
he ranks Biden 45 out of 46. James Buchanan ( possibly our first gay President) as 46.
But of course the lib historians tell us Biden is near the top.