US ambassador calls for Maduro ouster with megaphone diplomacy US Ambassador to the United Nations Nikki Haley addresses some 100 Venezuelan protesters in front of the United Nations in New York, who are calling for US intervention into the ongoing crisis in their country. The UN Human Rights Council earlier voted through a resolution urging the government of crisis-hit Venezuela to "accept humanitarian assistance" to alleviate the country's "scarcity" of food and medicines.