Respuesta :
Hello friend!
Your answer to this questions is Veto.
When the President refuses to sign a bill, there official name for this is Veto. Veto means "a constitutional right to reject a decision or proposal made by a law-making body."
source Oxford Dictionaries.
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-Edge
Answer:
veto
Explanation:
Veto is the power or right vested in one branch of a government to cancel or postpone the decisions, enactments, etc., of another branch, especially the right of a president, governor, or other chief executive to reject bills passed by the legislature