You'd hear wailing and gnashing of teeth in Silly Korn Alley as these petulant billionaires scramble a little to hire Americans. So what.
The sad/funny part is that all of the yelling and screaming about H1Bs that they do is at the lower end of the pay scale.
Remember how companies sending their manufacturing off-shore hollowed out our industry? Eventually, only offshore entities knew how to make many things, and the skill was lost here.
A similar thing is going on with H1Bs. There is no problem with competition at the higher salary levels. You can’t work those people like dogs and keep them creative. It’s at the entry level—first few years of career—that this is occurring. It is hollowing out the US STEM base.