More promises of Interposition.

James Madison

That this Assembly doth explicitly and peremptorily declare, that it views the powers of the federal government, as resulting from the compact, to which the states are parties; as limited by the plain sense and intention of the instrument constituting the compact; as no further valid that they are authorized by the grants enumerated in that compact; and that in case of a deliberate, palpable, and dangerous exercise of other powers, not granted by the said compact, the states who are parties thereto, have the right, and are in duty bound, to interpose for arresting the progress of the evil, and for maintaining within their respective limits, the authorities, rights and liberties appertaining to them. -- Virginia Resolution of 1798, written by James Madison.

From Minnesota: Pine County sheriff ‘will not enforce’ further federal gun regulations

From Oregon and Texas: Oregon, Texas officials warn White House against enforcing new gun regulations.