While the Constitution vests the King with executive power, he is not politically responsible for exercising it. This is in accordance not only with provisions of the Constitution, but with conventions established since the definitive establishment of parliamentary rule in Norway in 1884. His acts are not valid without the countersignature of a member of the Council of State (cabinet)–usually the Prime Minister–and proceedings of the Council of State are signed by all of its members. Although he nominally has the power of veto, no Norwegian king has exercised it since the dissolution of the union with Sweden in 1905. Even then, the King's veto power is suspensive, not absolute as is the case with British monarchs. A royal veto can be overridden if the Storting passes the same bill following a general election.