While seven states – Tennessee, Idaho, North Dakota, South Dakota, Oklahoma, Alaska and Louisiana – have had both houses of their legislatures pass similar decrees, Alaska Gov. Palin [R] and Tennessee Gov. Phil Bredesen [D] are currently the only governors to have signed their states' sovereignty resolutions.
The resolutions all address the Tenth Amendment that says: "powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people."
I often disagree with Bredesen, but I certainly support him on this issue.