What are the limitations of the Executive and Legislative branches?

Read lots and let us know what you discover.

http://www.google.com/search?q=limitations+on+executive+branch&oq=limitations+on+executive+branch&aqs=chrome..69i57.6122j0j7&sourceid=chrome&ie=UTF-8

and

http://www.google.com/?gws_rd=ssl#q=limitations+on+legislative+branch