Should Marty Makary take the reins at the FDA, transitioning from gadfly to the head of an agency that regulates a fifth of the U.S. economy, he would have to engage in the thorny challenges of governing.

Marty Makary, a career surgeon and President Trump’s nominee to run the Food and Drug Administration (FDA), faced senators in his confirmation hearing on Thursday, aligning himself with the Make

If confirmed, Makary would run one of the nation's leading health agencies, overseeing the regulation of food and drugs.