The U.S. Senate voted on Tuesday night 51-47 along party lines to confirm President Donald Trump's nominee, Susan Monarez, as director of the Centers for Disease Control and Prevention, charged with leading the response to threats against public health.

The agency’s new leader must contend with reduced budgets, mass layoffs, political tumult and a boss determined to reshape public health.

Susan Monarez is the first director of the Centers for Disease Control and Prevention to require Senate confirmation. She's also the first director without a medical degree in more than 70 years.

The measure would bar lawmakers, the president and vice president from purchasing stocks and other “covered investments.”

The bill passed the committee with the support of every Democrat and only one Republican, its sponsor, who modified it to shield President Trump from a divestment requirement.