USA Update SeaWorld killer whale: Should trainers swim with orcas? Appeals court to rule. (+video)

A SeaWorld orca killed a trainer during a performance in 2010. The appeals court is being asked to decide if restrictions imposed by OSHA on orca-human contact are a sensible safety measure or unfair curtailment of SeaWorld's main attraction.

Mathieu Belanger/Reuters/File

Marine mammal park company SeaWorld, whose trainers were barred from close contact with killer whales after an orca named Tilikum killed a trainer in 2010, is arguing in federal appeals court that government regulators overstepped their authority when they restricted that contact.