Constitutional FAQ Answer #63
Q63. "Can the Federal Government actually own land, i.e the public lands which are managed by the various agencies, such as U.S. Forest Service and Bureau of Land Management?"
A. Article 4, Section 3, allows Congress to make all rules respecting the territory and property of the United States. If the United States were not constitutionally able to own land, then the Framers would not have mentioned the property of the United States.