Insider trading charges and an arrest on Thursday of lawyer Walter “Chet” Little set off a quick dismissal from his most recent law firm, Bradley Arant Boult Cummings. But Little’s alleged misconduct relates back to his days at Foley & Lardner. Did that firm, or the federal government, have a duty to warn Bradley Arant about an investigation before it hired Little?

In short, the answer is no, according to lawyers versed in professional liability and legal ethics issues. They said the burden fell on Bradley Arant, as the firm that hired Little in July 2016, to fully vet him.