All of the above
Chat with our AI personalities
On a personal level, he did have a mistress but that did not lead to any major scandal; and during a Poker game (of which he was very fond) he once gambled away a set of precious White House china. The often-mentioned Teapot Dome scandal did not mar his Presidency during his lifetime; it only became a scandal long after his death, and it was not Harding himself but his Secretary of the Interior, Albert B Fall, who was responsible for the scandal.
Other 'scandals' would today be considered business as usual: defense companies overcharging the Defence Ministry; drug trafficking in prisons and abuse of power and perks by a White House official. The man involved (Jess Smith) was immediately fired by Harding and formally expelled from Washington. Shortly afterwards Smith committed suicide by shooting himself and the tabloids of the time suggested that he might have been killed to shut him up. But no one came up with any major secrets that Smith might have revealed.
All in all, Warren Harding was a 'good' president, responsible for major legislation, and unlike most white Americans of the time did not hold any racial prejudices.
all the above
The financial and political scandals in addition to Harding's own personal controversies, severely damaged President Harding's personal reputation and eclipsed his presidential accomplishments. His scandals didn't seem to affect the economy.
He became ill and died in 1923!
Teapot Dome
Tweed ring (new york city, mostly) Teapot Dome (Harding cabinet)