Article 73 of the Constitution deals with the Extent of executive power of the Union. It says that the executive power of the Union shall extend-
- To the matters with respect to which Parliament has the power to make laws; and
- To the exercise of such rights, authority and jurisdiction as are exercisable by the Government of India by virtue of any treaty or agreement.
It implies that the executive authority is competent on issues on which the Union legislature has competence.