As others here have already posted, I call BULLSHIT of this quote by Joe Green. This is nothing more than political propaganda.
I worked in the computer industry over 35 years for DEC, EDS, HP, Loral Aerospace, and others. My roles ranged from component repair at customer location (soldering iron & oscilloscope), customer service manager, system engineering project manager, database admin, sales support, system admin, and virtualization work.
As also stated by an early poster, I don't know of a single colleague that would agree with the sentiment expressed in the Joe Green quote.
I worked with many software people holding visas. Many are very competent and motivated. Others not so much.
If Mr Green thinks the 'best' are outside the United States, then perhaps Facebook, Zuckerberg, and Mr Green should relocate to become permanent expatriates.