How it fits together
The president leads the executive branch, which includes departments and agencies that carry out federal laws. Cabinet officials advise the president and lead major areas of government work. The president also serves as commander in chief, placing the military under civilian leadership.
A closer look
Presidential power is checked by other branches. Congress passes legislation and can override a veto with two-thirds votes in both chambers. The Senate confirms many presidential nominees, including Supreme Court justices. Courts may review whether executive actions are lawful.