The Computer & Communications Industry Association and the non-profit public interest organisation First Amendment Coalition, which have been supporting Google in its dispute with China, say China's restrictions may hinder online commerce.
In January, Google refused to censor its search results on Google.cn and threatened to shut down its operations in China. The search engine company said it had evidence that the Chinese government hacked into the email accounts of human rights activists.
This has now created a diplomatic tussle between China and the US. On Tuesday US Senator Dick Durbin said that he will introduce a legislation that forces US businesses to protect human rights or face civil or criminal liability.
Google's deputy general counsel Nicole Wong said that talking to WTO was "worth considering".