Ron Kirk, U.S Trade Representative, sent a letter to the Chinese government requesting information about its censorship practices. China operates the world’s most elaborate internet censorship system.

The foreign ministry spokeswoman, Jiang Yu’s answer was that Chinese censorship followed international practice. New bills: Stop Online Piracy Act (SOPA) and Protect IP Act, could bring similar features of Chinese Internet Great Firewall to America.

“Opposition to SOPA is widespread, bipartisan, and international. The Center for Democracy and Technology is collecting links to blog posts, articles as well as letters of opposition from human rights groups, Internet engineers, law professors, Internet companies, public interest advocates, consumer rights groups, among others.”

Read Rebecca MacKinnon’s answer to this in the New York Times.