For every 10 percent increase in Chinese imports, U.S. wages across the affected jobs fell by 6.6 percent.
Here's a company that pays no taxes and uses slave labor
Meet the people that make iPhones and iPads

BBC Panorama secret filming inside Apple factory
Watch undercover filming at an Apple factory in Shanghai showing exhausted workers
UK Telegraph 19 Dec 2014
A worker at her post in a Chinese iPhone factory Screen Cap/BBC Panorama
The BBC's Panorama programme sent undercover reporters to Apple's Pegatron factories on the outskirts of Shanghai, where it claims to have uncovered poor treatment of workers and a breach of standards on workers' hours...
http://www.telegraph.co.uk/technology/apple/11303772/BBC-Panorama-secret-filming-inside-Apple-factory.html
How Does Apple Avoid Taxes?
5/28/13 Forbes.com

Apple set up some Irish subsidiaries a mere four years after it was founded. Foreign sales, which account for 60% of Apples profits, are routed through these Irish subsidiaries and taxed nowhere. How is this possible, when the intellectual property that supports the value of Apples products is in the United States?
Apple has an Irish holding company with no operations or employees at the top of its foreign operations. This company also serves as a group finance company. Apple Inc., the U.S. parent of the whole group, pays U.S. tax on the investment earnings of this company. Otherwise, the holding company pays no tax to any government, and has not paid tax for five years. It claims tax residence nowhere...
http://www.forbes.com/sites/leesheppard/2013/05/28/how-does-apple-avoid-taxes/
Chinese Workers Making iPhones Work 11-Hour Shifts, 6 Days A Week, For $1.50 Per Hour
Kevin Smith 7/29/13 Business Insider
Workers schedules are set at six days a week, with 11-hour shifts, 20 minutes of which is unpaid. The remainder of the shift is paid at a rate of $1.50 and hour which equals $268 per month before overtime...
http://www.businessinsider.com/china-labor-watch-apple-iphone-workers-2013-7
There's an example of "Free Trade". But hey Apple is about to become a Trillion dollar company, the shareholders are happy and the next iPhone will be super duper.