According to a survey commissioned by Bureau of Labor Statistics, just 2.5% of jobs lost are due to offshoring.  AFL-CIO thinks the survey is faulty.  My own experience suggests the number is bigger, at least in the Silicon Valley where I work.  At one company I have worked with for many years, it's engineering department was downsized to barebones and replaced with a large growing team of engineers in India.  2.5%?  Not even close