By illegal foreign India Inc staffing firms doing mass H-1B visa fraud, jamming their inadmissible alien workers into the US, displacing Americans and violating Title 8 of US law.
Then hiring US PR firms to pump “Americans too stupid” PR news stories into US media defaming US workers.
Organized crime.
That’s how.
https://www.quora.com/How-does-the-H-1B-program-snatch-jobs-from-US-citizens