A passage from the Declaration of Independence is seen on display May 8, 2018, at the National Museum of American History in Washington, D.C. (Photo by Andrew DeMillo/Arkansas Advocate)Wander through a grocery store today and you’re bound to see USA 250 branded merchandise, such as star-shaped tater tots, “together we grill” charcoal briquets (emblazoned with a bald eagle), and bags of Doritos “celebrating 250 years of America.” Beneath this sem…