A whistleblower in the southern California construction industry says illegal alien workers have “taken over every trade” in the business while driving down wages by an estimated 40 percent. ... Blaine Taylor, the whistleblower, said the construction industry in California once offered a starting wage of about $45 an hour in the late 1980s. Fast-forward to 2018 — nearly two decades into when illegal aliens began flooding the industry — he now says that wages have fallen by more than half, standing at just $11 an hour.