Walter "Chet" Little. Walter “Chet” Little.

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?