If there’s anything Washingtonians love more than brunching and expanding the administrative state, it’s the giant pandas at the National Zoo. On Wednesday, Washington, D.C., dwellers watched with sadness as Tian Tian, Mei Xiang, and Xiao Qi Ji left the zoo via FedEx trucks and, with a police escort, traveled down I-66 to Dulles International Airport, from where they returned to China.