White House officials raised concerns on Saturday about online-piracy legislation pending in Congress that Facebook and Google Inc. have decried as heavy-handed, but that Hollywood studios and music labels say is needed to save U.S. jobs.

In a blog posting, three advisers to President Barack Obama said they believed the proposed Stop Online Piracy Act (SOPA) and other bills could make businesses on the Internet vulnerable to litigation and harm legal activity and free speech.

Any effort to combat online piracy must guard against the risk of online censorship of lawful activity and must not inhibit innovation by our dynamic businesses large and small, said the officials, including White House cybersecurity czar Howard Schmidt.

The House of Representatives' SOPA bill aims to crack down on online sales of pirated American movies, music, or other goods by forcing Internet companies to block access to foreign sites offering material that violates U.S. copyright laws.

U.S. advertising networks could also be required to stop online ads, and search engines would be barred from directly linking to Web sites found to be distributing pirated goods.

The search-engine giant Google has repeatedly said the bill goes too far and could hurt investment. Along with other Internet firms such as eBay Inc., Facebook, Twitter Inc., and Yahoo Inc., it has run advertisements in major newspapers urging Washington lawmakers to rethink their approach.

Stealing Jobs

Proponents of stricter piracy rules reacted strongly to Saturday's White House statement, which darkened prospects for legislation already expected to struggle to clear Congress in an election year.

It is not censorship to enforce the law against foreign thieves, said U.S. Rep. Lamar Smith, R-Texas, who chairs the House Judiciary Committee. He estimated intellectual-property industries provide 19 million high-paying U.S. jobs and account for more than 60 percent of American exports.

Congress cannot stand by and do nothing while some of America's most profitable and productive industries are under attack, he said in a statement, responding to the White House.

In an interview with Reuters on Thursday, Smith had vowed to press ahead with the bill in spite of criticism from Google and others. He said he thought it would pass the House, where Republicans have a majority.

The U.S. Chamber of Commerce said it strongly supported the House legislation as well as the Protect IP Act in the Democrat-controlled Senate, calling both narrowly targeted bills designed to target the worst of the worst offenders.

Given the broad consensus that this issue needs to be addressed, it is time to come together and adopt strong legislation that ends the ability of foreign criminals to prey on innocent consumers and steal American jobs, it said.

The Motion Picture Association of America said that, while the White House statement raised significant points, protecting American jobs is important, too, particularly in these difficult economic times for our nation.

And the Recording Industry Association of America, noting that the United States is the world's top exporter of creative works, said it was intolerable for Internet companies to be allowed to direct law-abiding consumers to unlawful and dangerous sites.

Hyperbole, hysteria, and hypotheticals cannot change the fact that stealing is wrong, costing jobs, and must be contained, it said.

Public Opposition

Schmidt and the other advisers said the Obama administration was ready to work with lawmakers on a narrower, more targeted approach to online piracy to ensure that legitimate businesses -- including start-up firms - would not be harmed.

They also said online firms and Internet providers should adopt voluntary standards to clamp down on piracy, an approach Republicans in Congress and many companies have said lacks the teeth to have an impact.

Saturday's statement did not make clear whether Obama would veto the piracy legislation if it reaches his desk, something the White House would likely spell out more formally ahead of any votes in Congress.

Sherwin Siy, deputy legal director of the consumer-rights group Public Knowledge, called on lawmakers to set aside the existing bills and get to work on a new consensus bill responding to the White House concerns.

The messages being sent by the public in opposition to this bill are finally getting through to Washington, Siy said.