
"I’ve described it as a wind tunnel,” said Mack McLarty, who was President Bill Clinton’s first chief of staff. Top priority items were on the front and back burners of the stove and longer-term tasks got stashed into the freezer. Bush for nearly six years, likened his approach to managing a kitchen. In a 2005 Washington Post article, Andy Card, who served President George W. The job means juggling countless competing constituencies and often being the person who has to say “no” to them. The president's top aide is part of the Cabinet and must maintain good relationships with the heads of other agencies to ensure they are all on the same page.

The chief of staff controls access to the president and is charged with turning the administration's ambitions into reality. Zients is the one who presents options to the president on any number of executive decisions.

Zients is literally the chief of the West Wing staff, ensuring that trains run on time and that the president is well served by aides. So what does a White House chief of staff actually do? “But he’s got to run the government, and that’s a task which very few chiefs of staff have had real experience in doing.”

He shouldn’t have to do the analysis and he’s got all sorts of other people that will do that,” said Romney, who pondered his own chief of staff picks when he was the GOP presidential nominee in 2012. Mitt Romney, R-Utah, said the White House chief of staff is a kind of a “chief operating officer of the country.”
