Trump Organization chief financial officer Allen Weisselberg—a man who once claimed to be Trump’s “eyes and ears” with regard to his money—has twice cooperated with investigations into the ex-president’s finances. First, he cooperated with the New York attorney general’s probe of the Donald J. Trump Foundation in 2017, which resulted in a $2 million penalty for Trump. And then he cooperated with federal prosecutors’ 2018 inquiry into hush-money payments that Michael Cohen paid on Trump’s behalf to porn star Stormy Daniels (for which Weisselberg received limited immunity and Cohen received a prison sentence).

All this cooperation—for investigations into the dealings of a former U.S. president—and yet most Americans know nothing about the mustachioed Long Island bookkeeper who has kept Trump’s books and paid his bills for more than 30 years, other than possibly having once seen him on The Apprentice, back in 2004.