UNDATED (WIFR) -- "A regular computer user, all that it might do is cause sites that they use or depend on to disappear," says Adam Lied, an intellectual property attorney in Rockford.

Take YouTube for example. Let's say you want to see a new music video. If just one person posts a video that's copyrighted, the U.S. government could block the entire website.

"By law, Google would have to block that site. It would not even be able to tell you about it," says Fred Cate, Distinguished Professor of law at Indiana University Maurer School of Law and intellectual property expert.

"The concern is that how the legislation is written it's going to squelch first amendment rights," says Lied.

Current law grants immunity to websites. If they take down the content as soon as they discover it's copyrighted, they can't get in trouble.

"These sites do their best to patrol the sites and make sure there's no infringing material on their sites. But they can only do so much," says Lied.

The Stop Online Piracy Act (SOPA) wouldn't give websites a second chance. Even if that means they could lose advertising money and users.

"This is fundamentally a fight between different industries," says Cate.

The entertainment and recording industry wants it to pass. High-tech Internet industries are fighting it...hard.

Cate says he thinks the bill's opposition is gaining ground and isn't likely to pass. The bill's sponsors claim it's not meant to censor political or religious speech, but opponents say that might happen inadvertently because of the sloppy way the bill was drafted.

The intent was to crackdown on foreign websites that pirate copyrighted material in the U.S. The U.S. Chamber of Commerce estimates that American companies lose $135 billion in revenue each year because of online pirating of movies, music, and books.

The bill was debated in the House Wednesday. Sponsors anticipated it would be voted on it this week, but that might be delayed given the stark opposition from Internet giants like Google and Facebook.