And when I went undercover as a golf - course maintenance worker , the workers who patiently taught me the tricks of the trade were not authorized to work in the country .
During my reporting I visited many courses and spoke with dozens of undocumented immigrants .
When I went undercover as a golf - course maintenance worker , the workers who patiently taught me the tricks of the trade were not authorized to work in the country .
During my reporting I visited many courses and spoke with dozens of undocumented immigrants .