You have to be a direct descendent of a veteran of the War of Independence to join The Daughters of the American Revolution. Set up 125 years ago when its brother organisation refused to accept women, it now far eclipses the Sons of the American Revolution. It was once the watchword for white, exclusive privilege and is famous for refusing to allow a black singer to perform, but now it's membership is growing and it proudly boasts women of all backgrounds and colour. Its aims have changed little in its history: patriotism, education and the preservation of historic buildings. Emma Barnett joins four thousand of its members at its annual Congress in Washington to find out why women are choosing to join, and how they are interpreting the organisation's aims in the 21st century.
Producer: Katy Hickman.