A Derry woman who is challenging a requirement that she renounce her British citizenship before she can legally identify as Irish is taking her campaign to the US.

Emma DeSouza will travel to Washington, Philadelphia, New York and Boston next week to highlight what she describes as the British government's failure to give domestic legal effect to the birthright provisions of the Good Friday Agreement.

Ms DeSouza is challenging being automatically determined to be a British citizen under UK law rather than having a choice of Irish citizenship.

In October last year, an immigration tribunal ruled that the people of Northern Ireland remain British citizens even if they identify as Irish.

The UK Home Office, after years of appeals, successfully argued that Northern Ireland citizens have no right to choose their nationality, rather they are permitted to identify on a personal level as Irish, yet are in fact British at birth.

While in Washington, Emma DeSouza will meet members of the US Congress on Capitol Hill to seek a resolution in the House of Representatives calling on the British government to give domestic legal effect to the birthright entitlement of the people of Northern Ireland.

She will also meet the Irish Ambassador to the US Dan Mulhall and members of the Ad Hoc Committee to Protect Good Friday Agreement.