Senators on Tuesday pressed executives from Yahoo, Google, and Cisco Systems to justify their business practices in China and other Internet-censoring countries, with Cisco in the hot seat over new allegations of cozier-than-confessed ties with the Chinese police.

Sen. Richard Durbin (D-Ill.), who led the morning hearing in the Senate Judiciary Committee's human rights panel, said he is actively considering whether to draft new legislation that, similar to a pending House of Representatives proposal, would place a host of new restrictions on American companies doing business in Internet-restricting countries.

Durbin said he appreciates the efforts of American companies to promote free expression in otherwise oppressive countries but believes some are falling short on those pledges.

"Perhaps it's time for Congress to consider converting this moral obligation into a legal obligation," he said.

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