OPINION: Tom Price's resignation shows importance of strong Cabinet

The Friday night departure of Health and Human Services Secretary Tom Price over the controversy surrounding the costs of his travel on charter aircraft is a rare instance of a scandal claiming the job of a presidential Cabinet member. In many ways, the cabinet is the bellwether of an administration. Dysfunction in the cabinet often heralds deeper difficulties. Disgruntled or marginalized cabinet members, for instance, can be a symptom of over-centralization in the White House.