Soon after Trump broke ground at Bedminster in 2002 with a golden shovel, this village emerged as a wellspring of low-paid labor for the private club, which charges tens of thousands of dollars to join. Over the years, dozens of workers from Costa Rica went north to fill jobs as groundskeepers, housekeepers and dishwashers at Bedminster, former employees said. The club hired others from El Salvador, Mexico and Guatemala who spoke to The Post. Many ended up in the blue-collar borough of Bound Brook, New Jersey, piling into vans before dawn to head to the course each morning.