What does proprietary jurisdiction allow the federal government to do?

Proprietary jurisdiction refers to a type of jurisdiction where the federal government has ownership of property but does not possess full legislative authority over it in the same way that it would over federal enclaves or territories. This means that while the federal government can maintain and control property, it does not have the same level of legislative powers as it would have in a federal jurisdiction.

In this context, proprietary jurisdiction allows the federal government to manage and use property, but state laws may still apply in these areas unless specifically preempted by federal law. This is particularly relevant for federal installations or properties located within states, where the state retains some level of authority.

The other options do not accurately reflect the nature of proprietary jurisdiction. For instance, making and enforcing all laws without exception would imply a complete dominance which is not characteristic of proprietary jurisdiction. Conducting military operations in foreign countries pertains more to matters of international relations and military authority rather than proprietary jurisdiction. Similarly, regulating state laws in their entirety overlooks the shared and complex nature of federal and state relationships.