Congress in its infinite wisdom is constantly after China to strengthen it currency, the yuan, to help close the trade gap between the two nations. In economic parlance it's known as beggar thy neighbor. In a broader sense it very similar to countries that have lower corporate tax basis.
Attracting businesses is what its all about whether its the state of Texas or a country like Ireland or Canada.
The Pfizer-AstraZeneca deal is much in the news now and rumors about such a mega deal were afloat on the street for a while before it hit MSM. Here's more on the subject from Reuters.
http://www.reuters.com/article/2014/05/01/us-usa-tax-mergers-idUSBREA4003G20140501