Has any modern-era president more harm than Ronald Reagan? The enshrinement of Chicago-school, trickle-down economics began conservative MASSIVE tax cuts for the wealthy that presaged the assault on the middle-class. Revenues plummeted and MASSIVE federal debt became a staple.
Ronnie's obvious lack of concern for AIDs sufferers is legendary: the federal government did little or nothing despite loud and continuous cries from many communities, including that of the medical establishment.
The Iran-Contra affair certainly was an impeachable offense, a purposeful and illegal covert operation directly opposed to law. 
I won't visit the complete lack of progress on civil rights (some would say serious regress), the utter disregard for environmental protections (not necessarily a Republican thing since Nixon's EPA).
And then, we come to Nancy. Has any first lady done less? Not a singular interest that showed a concern any deeper than astrology and high fashion. 
Bozos, both of them.