One is his tax records. Here is and article that states he paid $750 in federal income taxes in 2016 and 2017.
Full article: https://www.yahoo.com/video/donald-trum ... QHdXgCD9XDAccording to The New York Times, the former president’s various businesses lost hundreds of millions of dollars over the previous 20 years, allowing him to reduce his federal tax obligation to almost nothing.
He may get by on the statute of limitations for criminal fraud but the IRS can still get him for civil cases.
He can also be charged under the RICO act that has brought down many a gangster. Here is an opinion article on how he and his family could be brought to justice under the Racketeering Act.
Full article https://www.rawstory.com/trump-crimes-2658345613/Trump's lifetime as an outlaw and a racketeer may finally be coming to an end after more than four decades of eluding the criminal law. He is currently encircled by at least six or seven significant civil or criminal investigations.. Most legal scholars or former U.S. prosecutors will likely approach these white-collar, corporate and state crimes evidently committed by Trump and his associates as disparate and unrelated litigating conflicts.
I would contend, however, that when Trump's fraudulent behavior is seen through the lenses of racketeering and the vantage point of a criminal enterprise, all his offenses or violations, whether civil or criminal, could be legally brought together and prosecuted under RICO, the Racketeer Influenced and Corrupt Organizations Act.