Overview: On this edition for Sunday, March 11, President Trump makes big foreign policy decisions ahead of Pennsylvania polls, and a tour of the Armory Show, one of the world’s biggest art fairs. Also, what one couple learned from their shift to frugality. Hari Sreenivasan anchors from New York. Editor's note: A segment in this episode of PBS NewsHour Weekend erroneously refers to Nicole Berry as the first female executive director of the Armory Show.