Presidents often justify a by arguing that a provision of a bill passed by congress is unconstitutional either directly or by infringing on the discretionary prerogative of the president as chief executive or commander in chief.

unitary executive.

Explanation:

The unitary executive theory is a theory of US constitutional law holding that the US president possesses the power to control the entire executive branch. The doctrine is rooted in Article Two of the United States Constitution, which vests "the executive power" of the United States in the President. Although that general principle is widely accepted, there is disagreement about the strength and scope of the doctrine.[

signing statement.

Explanation:

During the process in which bills are being signed into law by the Executive arm or branch of government of the United States of America which is the President. There are sometimes the President will put down his statement which is all about how the President can interprete the law. The President's statement that is the signing statement can be used to address the people of a country the reason the President signed the bill into law.

answer; ( conflict );