What does the Posse Comitatus Act prohibit?

The Posse Comitatus Act specifically prohibits the use of federal military forces to carry out domestic law enforcement duties. This legislation was enacted to ensure that the military does not act as a law enforcement entity within the United States, which is primarily the responsibility of civilian authorities. By maintaining a clear separation between military and civilian functions, the act upholds the principles of civilian control over the military and protects individual liberties from potential military overreach.

The other options do not align with the core provisions of the Posse Comitatus Act. The act does not address the deployment of troops for overseas missions, nor does it restrict military resources from being used in educational institutions or prohibit military involvement in community events, as these aspects do not fall within the scope of law enforcement duties that the act seeks to regulate.