3 effects of the teapot dome scandal:

Congress orders Harding to cancel the leases, and the Supreme Court declares the leases false, serious damage to the president's health.

Explanation:

The event is known in history as the "Tea Dome Scandal" took place in the 1920s. The scandal involved people who had significant positions in politics. Some people have committed certain corrupt practices for personal gain. Some associates of President Harding were also involved in the affair. And if the president was not involved in those activities, that situation seriously damaged his health, and he passed away after all the details of the affair were found out.