Basically they think he cheated but cant prove it. The amount of money lawyers have spent chasing him is amazing.
news.yahoo.com
How the Manhattan DA's Investigation Into Donald Trump Unraveled
NEW YORK — On a late January afternoon, two senior prosecutors stood before the new Manhattan district attorney, hoping to persuade him to criminally charge the former president of the United States. The prosecutors, Mark Pomerantz and Carey Dunne, detailed their strategy for proving that Donald...