When will they ever learn?
For many companies, not doing so is corporate suicide. Apple's earnings spiked right after it moved its Mac assembly lines to China. It has stopped assembling its products stateside. If your logo is on the end product, the trick is to conduct random audits without forewarning. But that's true even if you're manufacturing stateside. Some manufacturers went overboard in their cost-cutting, perhaps figuring that they could cut back on both auditing and labor costs. The ones that did not have had few issues. Dell assembled PC's from Chinese-made parts at inception, but gradually moved all assembly to China while becoming the biggest PC maker in the world.