UN special rapporteur on indigenous rights wraps up US trip United Nations Special Rapporteur on the Rights of Indigenous Peoples Victoria Tauli-Corpus says she is "deeply concerned" by the executive order signed by President Donald Trump permitting the last easement necessary to begin construction on the Dakota Access Pipeline under Lake Oahe, during the presentation Friday in Washington, DC, of the report on her trip in the United States looking at the impact of energy development projects. IMAGES AND SOUNDBITES