The Obama administration announced Friday that it would block an attempt by a Chinese-owned company to acquire four wind farm companies in the United States.

The Obama campaign is likely to use the decision to burnish Obama’s credentials as a president who is “tough on China.”

Obama and GOP presidential candidate Mitt Romney have been fighting for weeks over who can better protect the U.S. economy and its workers from China’s economic expansion.

Romney has run ads in the battleground state of Ohio saying he would be tougher on China, and said Obama has not done enough to push back against China’s undervalued currency. But Obama has responded by saying those ads aren’t credible, and has charged Romney with supporting the outsourcing of jobs to China. Obama has also reminded voters that he imposed tariffs on tires imported from China.