Source #2: http://www.ehow.com/facts_5591653_duties-executive-branch_.html
Quotes: "Within the executive branch itself, the president has broad powers to manage national affairs and the workings of the federal government."
"The president can issue rules, regulations, and instructions called executive orders, which have the binding force of law upon federal agencies but do not require congressional approval."
"In times of war or national emergency, the Congress may grant the president even broader powers to manage the national economy and protect the security of the United States."
Explanation of Connection: Even though the Executive Branch includes the vice president, Cabinet members and heads of selected agencies; the president seems to have the most powers. He oversees the armed forces, signs or vetoes laws, appoints federal judges etc. The President is considered the higher power (since he does run the country). He gets more responsibilities, more situations to deal with, and more on his plate in general; while trying to run our country, in the best way possible.
These quotes are connected to the Executive Branch because they are telling what the duties of the person (who is the head of this branch) are, and how much responsibility the president has to take on.
In my opinion, the president has the most responsibility because he is portrayed as the one man who runs the United States.He makes laws, keep everything together, in order etc. The president has powers that does not need approval from other parties, which means he can basically do anything he wanted to do, if he choose to.