From the 1970s until he was elected president in 2016, Donald Trump and his businesses were involved in over 4,000 legal cases in United States federal and state courts, including battles with casino patrons, million-dollar real estate lawsuits, personal defamation lawsuits, and over 100 business tax disputes
https://en.m.wikipedia.org/wiki/Personal_and_business_legal_affairs_of_Donald_Trump#:~:text=From%20the%201970s%20until%20he,over%20100%20business%20tax%20disputes.