That's everywhere. What can unions do to stop that? Even Democrats will throw their own under the bus if it means they can find a stronger and larger voting base somewhere else. Who do these foreigners (legal or illegal) hurt the most? They hurt the black community which is the strongest Democrat base they have. Yet Obama and the Democrats don't want to build a huge wall, they want to build a huge Welcome mat for our borders.
I never mentioned unions, I object to how easy it is to replace American Professionals with Business Visas and write offs on off-shoring.
There should also be a Tariff for US companies that moved away and make a certain threshold of their profits from the US consumer base they left behind.