Who has the authority to investigate postal offenses and related civil matters?

The United States Postal Inspection Service (USPIS) is the federal law enforcement agency specifically designated to investigate postal offenses and related civil matters. This agency is responsible for ensuring the safety and security of the U.S. mail system, which includes addressing crimes related to the mail, such as mail theft, fraud, and other offenses that may compromise the integrity of postal operations.

USPIS agents are trained to carry out investigations, collect evidence, and enforce federal laws related to the postal system, making them the primary authority in these matters. Their jurisdiction covers various aspects of postal service integrity and fraud, ensuring that the mail system remains safe for all users.

In contrast, other agencies like the FBI, OIG, and DEA have distinct mandates that do not center exclusively on postal-related offenses. For example, the FBI investigates a wider range of federal crimes, the OIG focuses on oversight and accountability within the postal service, and the DEA primarily addresses drug-related offenses. Therefore, the USPIS is the appropriate choice for authority over postal offenses.