Prior to the 20^th century, all of our presidents spoke often about the Constitution and their constitutional duty.  But starting with Woodrow Wilson, president spoke of the Constitution less and less, with some of them actively undermining constitutional restraints on government power, and with others actively mis-educating Americans about the Constitution.  In the Politically Incorrect Guide to the Presidents, From Wilson to Obama, Steven Hayward revives the original standards of the Founding for judging our presidents.  In assigning letter grades to modern presidents, Hayward discusses how future presidents should begin taking seriously their oath of office to “preserve, protect, and defend” the Constitution.