This review of Trump’s many decades of abusing the judicial system, ignoring judges, disregarding rules, destroying documents and lying about it is not simply a sordid history lesson. Rather, it helps explain his behavior since he declared his candidacy. He promised to turn over his tax returns and his health records—just as he promised to comply with document discovery requirements in so many lawsuits—then reneged. As a result, he has left a sparse evidentiary trail that can be used to assess his wealth, his qualifications for the presidency or even his fitness. Should voters choose him to be the next U.S. president, he will enter the Oval Office as a mystery, a man who has repeatedly flouted the rules. He has solemnly told the country to trust him while refusing to produce any records to prove whether he speaks the truth or has utter contempt for it.