Interposition, in the context of the Kentucky and Virginia Resolutions refers to the right of states to protect the liberties of its own citizens. It is often used in conjuction with nullification, which gives states the right to nullify, or invalidate, any federal law which that state had deemed unconstitutional.
Example Usage of Interposition
TenthAmendment: RT @CO10thAmendment Lew Rockwell and judge Andrew Napolitano discuss Interposition and nullification http://bit.ly/8cK3Nm
CO10thAmendment: Lew Rockwell and judge Andrew Napolitano discuss Interposition and nullification http://bit.ly/8cK3Nm
crthomas42: Interposition of the Almighty Hand to heal the wounds of the nation and to restore it as soon as may be consistent with the Divine purposes