Six Native American tribes in the US state of Virginia are campaigning to win formal recognition from the federal government.

The tribes claim they have been denied their proper rights - enjoyed by 565 other tribes in the US which do have official status - since a 1920s state law on "racial integrity" decreed that people in Virginia were either "white or coloured".

Yet the tribes are recognised in the UK thanks to a peace treaty signed in 1677 with the King of England.

The BBC went to a pow wow festival hosted by the Chickahominy tribe in southern Virginia to hear what formal recognition would mean for their community.

Produced for the BBC by Leigh Paterson