Does the NFL's Rooney Rule still work?

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NFL head coach Brian Flores is suing the league and some teams in a racism claim. Mr Flores says he was used by teams to meet quotas set out in the league's Rooney Rule, which set rules on interviewing candidates of colour for coaching and executive positions. World Business Report's Will Bain speaks to Professor Jeremi Duru, law professor at the American University in Washington DC, and one of those who contributed to the drafting of the Rooney Rule about Mr Flores' case.