The Clintons and their family foundation have at least five shell companies registered to the address 1209 North Orange Street in Wilmington, Delaware — which is also home to some 280,000 other companies who use the location to take advantage of the state's low taxes, limited disclosure requirements, and other business incentives.

Two of the five are tied to Bill and Hillary Clinton specifically. One, WJC, LLC, is used by the former president to collect his consulting fees. The other, ZFS Holdings, LLC, was used by the former secretary of state to process her $5.5 million book advance from Simon & Schuster. Three additional shell companies belong to the Clinton Foundation.

There is nothing illegal about the Clintons' decision to take advantage of Delaware's tax laws. However, on the campaign trail last week, Hillary Clinton criticized the "super-rich" who use "outrageous tax havens and loopholes" to pay fewer taxes. She pledged that, as president, she would "shut down the so-called private tax system for the mega-wealthy," including legal tax avoidance activities, in order to "make sure that everyone pays their fair share here in America." Bonnie Kristian