Answer:
1. Democratic National Committee
2. Obstruction of Justice
3. August 9, 1974
Explanation:
On June 17, 1972, robbers were caught wiretapping telephones and taking documents in the Democratic National Committee.
The Washington Post reported that President Richard Nixon was connected to the crime, as part of his reelection campaign, and had tried to cover up the crime, in addition to many cases of abuse of power by his administration. Therefore, Nixon had to resign on August 9, 1974.