Actually the cheap Labor from China and Tiawan providing goods is more wide spread than just in Walmart or Target Stores.
Check your Labels Folks...
Most of the time I am reading ..manufactured in China/Tiawan. Assembled in the US.
We commission the work out, these Countries do the drudge part then they import it to us and then our cheap Labor force put it together and apply the labels saying made in the US!
With the buying power they command I am sure Walmart and Target, K Mart and Sears and many others buy up a good portion of these imports.

It is hard for some People NOT use these stores considering their economic situations for many people in this and other Countries...sometimes the monetary cost of a Principal and the needs of a Low Income Family just don't work out Budget wise sadly.
Hence why these Companies are thriving.