Government authority is distributed between several branches to prevent power from being concentrated in the hands of a single person. In a presidential system, the leader of the executive is both the head of state and federal government. Executive orders are subject to judicial review and may be overturned if the orders lack support by statute or the Constitution. The United States Constitution does not have a provision that explicitly permits the use of executive orders.
If it wasn't for bad luck, I wouldn't have no luck at all.
