Vibrations in the steering column can happen for a number of reasons, such as a busted motor mount, bent rims, bad CV joints or loose lug nuts [source: Distad]. But none of these automotive problems would cause a steering wheel to shake only when the brakes are applied. That's almost always due to a problem with the rotors. Good question. Rotors are discs that your brake pads clamp down on in order to stop your car. In other words, they're pretty important. Why they may cause the steering wheel to shake when braking requires a quick review of how rotors work.
War Department - a former executive department of the United States government; created in 1789 and combined with the Navy Department in 1947. executive branch, Executive Office of the President - the branch of the United States government that is responsible for carrying out the laws.
An executive monarchy is a limited monarchy where the ruler is the head executive officer like our President of the United States. He might have control of the military or the ability to veto a law, but his powers are balanced by the legislative and judicial branches of government.