The Washington Post spoke with 16 men and women from Costa Rica and other Latin American countries, including six in Santa Teresa de Cajon, who said they were employed at the Trump National Golf Club Bedminster. All of them said that they worked for Trump without legal status -- and that their managers knew.

The former employees who still live in New Jersey provided pay slips documenting their work at the Bedminster club. They identified friends and relatives in Costa Rica who also were employed at the course. In Costa Rica, The Post located former workers in two regions who provided detailed accounts of their time at the Bedminster property and shared memorabilia they had kept, such as Trump-branded golf tees, as well as photos of themselves at the club.

The brightly painted homes that line the road in Santa Teresa de Cajon, many paid for by wages earned 4,000 miles away, are the fruits of a long-running pipeline of illegal workers to the president's course, one that carried far more than a few unauthorized employees who slipped through the cracks.

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, N.J., piling into vans before dawn to head to the course each morning.

Their descriptions of Bedminster's long reliance on illegal workers are bolstered by a newly obtained police report showing that the club's head of security was told in 2011 about an employee suspected of using false identification papers -- the first known documentation of a warning to the Trump Organization about the legal status of a worker.

Other supervisors received similar flags over the years. A worker from Ecuador said she told Bedminster's general manager several years ago that she entered the country illegally.