Thanks for the explanation - I understand your reasoning regarding Kelo now. Not that I’m completely sold on your interpretation :-) but I do get what you’re saying.
My explanation of the scope of the federal Constitution is based on John Bingham's discussion of the 14th A., Bingham being the main author of Sec. 1 of the 14th Amendment. In fact, I brought up Barron v. Baltimore (1833) because Bingham emphasized that case in his post-ratification discussion of the 14th Amendment. See Justice Marshall, Barron v. Baltimore and John Bingham on the following page in the Congressional Globe, a precursor to the Congressional Record.
http://tinyurl.com/y3ne4n