At his confirmation hearing last month to lead the Food and Drug Administration, Robert Califf was pressed by U.S. senators for his views on the opioid crisis, on tobacco and e-cigarette regulation, and on his relationship with pharmaceutical and tech companies.
Califf came prepared and, by all accounts, sailed through.
But the hearing did little to address a fundamental question: Who is Robert Califf, and what can we expect him to do?
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