ILO member States are required to submit any Convention or Protocol adopted by the International Labour Conference to their competent national authority for the enactment of relevant legislation or other action, including ratification. An adopted Convention or Protocol normally comes into force 12 months after being ratified by two member States. Ratification is a formal procedure whereby a State accepts the Convention or Protocol as a legally binding instrument. Once it has ratified a Convention or Protocol, a country is subject to the ILO regular supervisory system, which is responsible for ensuring that the instrument is applied. For more on the ILO supervisory system, see section “Applying and promoting International Labour Standards ”.