Edward Lengel, chief historian of the White House Historical Association during Trump's first term, told HuffPost hosting “a vicious and violent sport ... sullies the image of this country.”

The arched framework for a temporary arena already looms over the neoclassical building like a looping roller coaster at a theme park.

Edward Lengel, chief historian of the White House Historical Association during Trump's first term, told HuffPost hosting “a vicious and violent sport ... sullies the image of…