It’s the style of shirt he used to wear to identify himself when doing field work for the foreign aid organization. His Stillpoint talk, An Evening with Nathaniel Scott, detailed his career at USAID and the agency’s ongoing collapse. Founded during the Cold War, it was the world’s largest foreign aid organization until this year. In Colombia, Mr. Scott ran the largest technical office in Latin America. Mr. Scott claimed the way the Trump Administration dismantled USAID without first going through the legislature was unconstitutional.