NEW YORK (AP) — He's one of the longest-serving employees in Donald Trump's family real estate business. Through triumphs, scandals and bankruptcies, he was there.

Allen Weisselberg was handling the books when Fred Trump ran the company in the early 1970s. He was handling them when his son Donald made his mark with Trump Tower in the early '80s, then teetered on personal bankruptcy in the '90s. And he was there when Trump transformed the business around his TV celebrity in the new millennium and went on a global licensing spree.

Now the private and loyal Weisselberg is in the spotlight as the...