Williams v. United States

denying petitioner’s claim that a 30 day comment period was unreasonable, notwithstanding petitioner’s complaint that the rule was a novel proposition | declining to apply per se rule to World, Boxing Council suspension practices | "[T]he plain error doctrine, especially in civil cases, should be applied only where the ‘error [is] so serious and flagrant that it goes to the very integrity of the trial.’ ” | agency need not republish for notice and comment rules that follow logically from, or that reasonably develop, the rule as originally proposed | Rule 51 requires party to object before jury retires to preserve jury instruction challenge | group boycott claim not subjected to per se analysis