what madness is this?

His geniality served Reagan well
when nouns and syntax all began slip.
He gazed into the teleprompter's well
and few could tell he'd wholly lost his grip.
A nasty man projects his character
as if the flaws and sins were not his own
and somehow, blame should all attach to her
when now the onus falls on him, alone.
Dementia steals Trump's only competence
no logic now connects his web of lies
increasingly, we'd settle for mere Pence
for whom brute power's not the only prize.
The oldest president we've ever known
is mad as Lear, but clinging to the throne.