Why should someone in a "vulnerable" job get special protections? That's easy. Because they're producing goods and services for the American market.

Very few American workers are employed producing goods or services for foreign markets. Foreign workers are very well protected from competition by American workers. As a result our exports are quite MINISCULE compared to our imports... hence our trade deficit.

American workers can't get jobs producing iPads for the American market. China is now a growing market for iPads and American workers are locked out of that, too.

American workers are locked out of the global job market and are being locked out of working for the American market, too, and you dare to lecture us about racism against foreigners? Really?! Do you, unlike any other free trader, have an answer for why you want us to accept that?