Donald Trumphas been breaking new ground in his presidential campaign by selling a diverse range of products, including Bibles, sneakers, and perfume. This move, which experts say is unprecedented for a presidential candidate, is raising eyebrows.

What Happened: Trump's campaign is offering a variety of products, from Bibles to trading cards. This business activity, which is intertwined with his White House bid, is a first in presidential campaign history, according to experts.

Harvard Law SchoolprofessorLawrence Lessig said "there is no precedent for this level" of business activity seen during a presidential campaign is unprecedented, yet he...