A convenience store chain where President Joe Biden stopped for snacks this week while campaigning in Pennsylvania has been hit with a lawsuit by federal officials who allege the company discriminated against minority job applicants. Sheetz Inc. which operates more than 700 stores in six states, discriminated against Black, Native American and multiracial job seekers by automatically weeding out applicants whom the company deemed to have failed a criminal background check, according to U.S. officials.