How long does a proclamation of emergency need to be in operation for Parliament to make laws for the whole or any part of the territory of India with respect to goods and services tax provided under Article 246A or any of the matters enumerated in the State List?
The proclamation of emergency needs to be in operation for a law made by Parliament under Article 249 and 250 to prevail over state laws. However, there is no specific duration mentioned in the context provided.