[4CJ]

You might want to read up on eminent domain. Numerous states/cities haves "seized" private/commmerical property for the sake of transferring it to another private/commercial interests (thankfully the courts are finally stepping in and stopping the practice). In Arizona and other states public utilities may seize federal, state, commericial and private property ("[t]he authority may acquire by lease, purchase or any other means, real property owned by the state or federal government.") Until 1875, the federal government did not have the power to seize lands - relying solely on the states to do so.

[Non-Sequitur]

You bolster my case with you examples of states siezing privat/commercial property, but not federal property. I'm not aware of a case where federal property was ever condemned without the approval of the federal government, not now and certainly not in 1861.