If you purchase an item on Amazon - check to see if it's made in China. If so, do not buy.
If it doesn't say - purchase the product. When you recieve it, check to see where it was made. If China, add a question to the product on amazon "Where was the product made" and then respond to it "China". Next, consider returning the product if you can do without.
If we all start following those two simple rules in how we interact with Amazon, we can make some change.
We need a strong and ENFORCED law requiring web merchants to list COO of EVERY item they offer for sale.