EXCLUSIVE: New York Attorney General Letitia James, who became President Donald Trump's nemesis after accusing him of mortgage fraud, is now battling the very same allegations, and her chief tormentor is a legendary scam artist who says he knows a crook when he sees one. Sam Antar, who kept the books for his cousin, "Crazy Eddie" Antar, while he built a New York-area consumer electronics empire, helped his late relative skim cash and inflate the value of their company before leaving investors high and dry in the late 1980s. He says he knows every trick in the fraud book and...