[iamelgringo]

With the importation of so many engineers into the US, wages were suppressed and many American students who had the potential to become engineers made the rational decision to pursue other career paths.

You're assuming that it's a zero sum game, and that there's only a limited number of engineering jobs available.

What about all the companies that immigrants and immigrant children started? Ebay, Yahoo, Google, etc... All those jobs created by those companies would not exist hat it not been for immigration.