"We stand with the hundreds of businesses, trade associations, professional labor organizations, state attorneys general, and district attorneys, among others, who are concerned about the serious problem of foreign rogue websites that profit through copyright infringement and the sale of counterfeit products," the BBB wrote.

SOPA would allow the U.S. Department of Justice to seek court orders to block U.S. access to foreign websites accused of infringing copyright.

The bill would also allow copyright holders to seek court orders to block the allegedly infringing sites if efforts to get online advertising networks and payment processors to stop doing business with the sites failed.

Websites operated for the purpose of infringement or having "only limited purpose or use other than" infringement would be targeted, as would sites that engage in, enable or facilitate infringement, according to language in the bill. The bill would also make it a crime, with a five-year prison term, to stream Web content without permission, in some cases.

Meanwhile, the Consumer Electronics Association, an opponent of SOPA, shot back at the Motion Picture Association of America after the MPAA accused the CEA of using "sky-is-falling rhetoric" about SOPA. CEA has warned that SOPA could allow U.S. law enforcement agencies to shut down legitimate e-commerce sites, and CEA President and CEO Gary Shapiro also opposed the Digital Millennium Copyright Act in the late '90s, the .