Task: Question Generation
Input (English): The division between the two is often not clear and is often politicized in disagreements within a government over a treaty, since a non-self-executing treaty cannot be acted on without the proper change in domestic law. If a treaty requires implementing legislation, a state may be in default of its obligations by the failure of its legislature to pass the necessary domestic laws.
Output (English): The often unclear division between a self-executing treaty and a non-self-executing treaty can lead to a treaty being what if disagreements exist within a party?