U.S. History
- Pork Barrel
- Portuguese Americans
- Potsdam Conference
- Powwow
- Pre-emption Act
- Pregnancy Discrimination Act of 1978
- Presidential Elections
- Presidents of the United States
- Primal Therapy
- Privacy Act
- Private Schools
- Prizefighting
- Product tampering
- Progressive party
- prohibition
- Prohibition party
- Proprietary colonies
- Public works
- Pugwash Conferences
- Quids