In today's political landscape, there is a great divide between those who believe that the president has supreme power and those who believe that the Constitution sets limits on the president's power. On the one hand, presidents like George W. Bush and Barack Obama have made use of their powers to enact sweeping legislative reforms. On the other hand, presidents like Richard Nixon and Andrew Johnson have been impeached and removed from office due to their abuse of power. In short, there is no clear answer as to whether the president has supreme power. The Constitution is vague on the issue and it is up to the courts to delineate what transgressions qualify as abuse of power.