Chinese Currency Manipulation

Manufacturers in the US want China to increase the value of the yuan. They say China undervalues their currency making their products cheap, thus undercutting American business. Some believe that this is why Americans are losing jobs. Wal-Mart and other companies believe it is a good thing because it keeps prices low for the products they sell.

Discuss whether low yuan value is good for the US because of low prices or
If it is costing too many Americans their jobs.
Do some research on the subject of currency manipulation for additional information to debate this topic.