In his most recent financial disclosure, Trump reported hundreds of millions in income from his various properties, including golf clubs and his Mar-a-Lago estate and club. He has also earned millions from other business ventures, including trademarking merchandise like watches and fragrances.

The White House isn't calling Trump's five-day, midsummer jaunt a vacation, but rather a working trip where the Republican president might hold a news conference and sit for interviews with U.S. and British media outlets.