The idea that Harding is the worst president is rooted in the intellectual institutional racism of the Democratic Party as articulated by leaders such as Woodrow Wilson and William Estsbrook Chancellor.
The main argument democrats made against Harding in 1920 was that since he had a black grandmother he was not fit to serve as a non white.
Harding won the largest popular vote victory in presidential history. Eugene
He was actually one of the best presidents.
I guess it could be argued for some time as to who was the worst president of all time. There are several candidates. I guess one could make up a list of each candidates bad points & then compare the numbers. Even then, it would still come down to a matter of opinion.