The governor of Michigan is the head of the executive branch of Michigan's state government and serves as the commander-in-chief of the state's military forces. The governor has a duty to enforce state laws; the power to either approve or veto appropriation bills passed by the Michigan Legislature; the power to convene the legislature; and the power to grant pardons, except in cases of impeachment. He or she is also empowered to reorganize the executive branch of the state government.