Fredreka Schouten for USA Today:

If voters decide to hire billionaire Donald Trump as their president in 2016, they couldn’t actually fire him from the job he now holds.

Federal law doesn’t explicitly prohibit President Trump from continuing to run the sprawling gambling, real-estate and brand-marketing empire that is the Trump Organization, federal ethics experts say. And the conflict-of-interest rules that bar Cabinet secretaries and other high-ranking executive branch officials from overseeing matters that boost their personal bottom lines don’t apply to the president.

“The president holds a constitutional office, and it’s very difficult constitutionally to restrict the president’s activities,” said Robert Kelner, a Washington lawyer who specializes in ethics and election laws. “Were he to be elected, it would be an interesting test case.”