In 2004 Congress changed the law, preventing delivery of distants into MARKETS that had a carried affiliate. Subscribers that had a distant could be grandfathered. In MARKETS that do not have an affiliate of a particular network carried that network can be imported ... but that 2004 change of law got rid of the option to deliver both an in-market and distant affiliate to white areas. A "short market" is a market missing one or more network affiliate. Distants can be brought in for the missing networks.