Long-running Nazi art case returns to DC Circuit courthousenews.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from courthousenews.com Daily Mail and Mail on Sunday newspapers.
Recent legislation requires institutions to label works they display that was stolen by the Nazis, but some are still unwilling to publish their provenance research
Internal crime agency urges vigilance, and greater efforts on monitoring and enforcement, but industry figures say study lacks focus and hard evidence of key vulnerabilities.