“What law or clause of the Constitution allows the federal government to seize state land, or allows states to seize federal land?”
There is no such provision in the real Constitution but who knows what may have been slipped into the synthetic Constitution, or the two million page Federal Register.
The procedure for how to reimburse the United States for property it claims to own when states secede is not well defined. It has only happened 11 times in our history.
The Confederacy recognized this and offered to negotiate all issues with the United States in an attempt to preserve the peace. With war potentially looming and thousands of lives at risk, Lincoln refused to meet with southern representatives.
So in other words there is no provision that you know of? Then why do you insist there is?
The procedure for how to reimburse the United States for property it claims to own when states secede is not well defined. It has only happened 11 times in our history.
What were the other 10?
The Confederacy recognized this and offered to negotiate all issues with the United States in an attempt to preserve the peace. With war potentially looming and thousands of lives at risk, Lincoln refused to meet with southern representatives.
Well no they didn't but that is neither here nor there. The claim was that Sumter belonged to the Confederacy and Anderson's troops were trespassing. Can you please explain the legal process that resulted in that?