STRAT | September 3, 2025 | 19th Century Law at Center of Legal Military Showdown
Description
In this episode of STRAT with retired Marine Intelligence Officer Hal Kempfer, we examine the recent federal court decision in California that found the Trump Administration violated the Posse Comitatus Act of 1878 by deploying U.S. military forces for law enforcement duties. We break down what the Act actually says, why it exists, and how its restrictions have been shaped by modern exceptions including nuclear, counterdrug, and weapons of mass destruction emergencies. We also look at the Insurrection Act of 1807, the historical precedents for military involvement in domestic affairs, and the thirty times it has been invoked throughout American history. The ruling by Judge Charles Breyer against the Trump Administration is analyzed in detail, including its implications for federal versus state authority, national security, and constitutional separation of powers. Finally, we explore whether the 9th Circuit Court of Appeals or the Supreme Court could reverse this ruling—and what that means for future presidential authority.
Takeaways:
- The Posse Comitatus Act of 1878 restricts federal military involvement in civilian law enforcement.
- Modern exceptions include emergencies involving nuclear material, counterdrug missions, and WMD threats.
- In 2021, the Act was formally extended to cover all military branches, including the Navy and Marine Corps.
- The Insurrection Act of 1807 provides a major exception, invoked 30 times in U.S. history.
- Past uses of the Insurrection Act include Little Rock school desegregation, Selma marches, and the 1992 Los Angeles riots.
- Judge Charles Breyer ruled that Trump’s use of Marines and the California National Guard in Los Angeles violated the law.
- The ruling blocks federal use of troops for policing without congressional authorization.
- The 9th Circuit Court and Supreme Court may ultimately decide the scope of presidential authority.
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