[DoodleDawg]

Nope. Land that becomes a state was previously some kind of federal territory. Constitutionally, after the land becomes a state, ALL the land belongs to the state and the constitutional provision cited is the only way the feds can constitutionally own land within a state.

I have no idea what Constitution you're referring to.

[Jim W N]

I have no idea what Constitution you're referring to.

I'm sure you don't. I'm sure your think that if its NOT forbidden in the U.S. Constitution, then it must be OK for the feds.

But that is NOT the presumption of the of THE U.S. Constitution which created the feds and delegated certain limited enumerated powers to the feds outside of which the feds have no power.

Read and re-read the Ninth and Tenth Amendments which explain all of this. Also read and re-read the Declaration of independence which presumptively frames the Constitution.