Interposition Doctrine Law and Legal Definition

Interposition doctrine refers to a doctrine whereby a state in the exercise of its sovereign power may reject an order or authority of the federal government that appears to be unconstitutional or exceeding the powers delegated to the federal government. According to this doctrine a state do not possess a constitutional obligation to obey any decision of the supreme court with which they do not agree.

The rationale behind interposition doctrine was to protect:

individual interests from federal violation and

abridgement of states' rights deemed by those states to be dangerous or unconstitutional.

However, in Cooper v. Aaron, 358 U.S. 1 (U.S. 1958) the interposition doctrine was rejected by the U.S. Supreme Court.