a primary source is a source from the time and place of the event, like a photograph that was taken of a president from 1920. If it was something like a book written in 2015 about the picture from 1920, that would be a secondary source. Hope this helps!
The President (aka Executive Branch) is responsible for implementing legislation and executive orders. The US Constitution gives the president this power, as Article Two outlines the expectations and rights of the executive branch. This power given to the president can be checked by other branches of the federal government though, as the Supreme Court has the power of judicial review. This means the Supreme Court can rule acts of legislation or executive orders as unconstitutional.
