"He has to do the heavy lifting and the windows and the wash, and also protect the president"

This quote by Alan K. Simpson is referring to the role of the President's Chief of Staff. The Chief of Staff is accountable for managing the President's schedule, managing the personnel, and guaranteeing that the President's agenda is carried out. The Chief of Staff is likewise accountable for doing the "heavy lifting" and looking after the day-to-day jobs that the President does not have time for. This includes handling the windows and the wash, in addition to protecting the President from any prospective threats. The Chief of Staff is the President's right-hand guy and is responsible for ensuring that the President's agenda is performed effectively and efficiently. The Chief of Staff is an important role in the President's administration and is important for the success of the President's term.