Michael Cohen, a former personal lawyer to Donald Trump, said in court papers unsealed Friday that he had accidentally given his lawyers fictitious legal citations generated by an artificial intelligence program — an admission that could undermine his credibility when he testifies against his former boss. The fake citations were used by Cohen’s lawyer, David Schwartz, in a motion submitted to federal Judge Jesse M. Furman, the New York Times reported Friday. Cohen had asked the judge in the motion for an early end to the court’s supervision of his case, after serving prison time and complying with the conditions...