Facing pressure from Walmart opponents, the host committee for the Democratic National Convention is returning $50,000 worth of gift cards donated to the convention cause by the megaretailer, a Walmart spokeswoman and a convention official confirmed to The Huffington Post on Monday. The Democratic National Committee has maintained a rule barring corporate cash donations for the Charlotte festivities slated for September, so Democrats accepted the gift cards as an in-kind donation to help cover convention costs.