Mitsitam
Mitsitam, in the National Museum of the American Indian, 4th Street SW and Independence Avenue SW, 202-633-1000, 10-5 every day, sometimes very crowded (Metro Trip Planner - opens in new window) [Washingtonian | WaPo | City Paper | The Free Lance-Star | openlist]
They have five restaurants in one, many of them try to represent various Indian dishes. Well, sort of. You can get buffalo burgers, tamales, Northwest salmon, quinoa grain salad, corn on the cob, cranberries, pumpkin, cactus salad, tacos, and smoked turkey sandwich. I’ve yet to find a single dish that fully delivers, where else can you eat on the Mall? I give at an “A” for effort, at the very least.