The 17 June groundbreaking of a future suburban neighborhood in Gastonia, North Carolina, had all the trappings of a campaign rally. Brock Fankhauser, the real estate developer of 1776 Gastonia, waved to onlookers from the open top of a sport-utility vehicle; his wife, Nicole, was by his side, wearing a cowboy hat and matching T-shirt with the development’s namesake year, referring to the American Revolution. Video footage of the event shows a crane dangling a giant US flag over the site where 43 lots are for sale. Parcels range from $17,500 to $75,000 for land, and homes cost $410,000 and...