In an annual report to Congress, the US-China Economic and Security Review Commission charged that Beijing "is directing and executing a large-scale cyber espionage campaign" that has penetrated the US government and private industry.
"There is an urgent need for Washington to take action to prompt Beijing to change its approach to cyberspace and deter future Chinese cyber theft," said the commission, which was set up by Congress to make policy recommendations.
Other possibilities include restricting access to US banks for companies deemed to have used stolen technologies or banning travel to the United States for people involved in hacking.
The commission did not endorse specific steps but said the potential measures "would be more effective if used in combination."
"They probably would lead Beijing to make only temporary or minor changes to its cyber espionage activities if used in isolation," it said.
China has cited Snowden's revelations to accuse US President Barack Obama of double standards, saying that Beijing is also a victim of cyber espionage.
The report said the United States and China have maintained dialogue on cybersecurity but quoted observers as estimating that Snowden's disclosures have set back US efforts "by at least six months."
"Frankly, yes, it has hurt the US ability to express concern. There's no question of that," Dennis Shea, the vice chairman of the commission, told reporters.
In a report released in February, the security firm Mandiant said China was devoting thousands of people to, and has made a major investment in, a military-linked unit that has pilfered intellectual property and government secrets.
The commission said the Chinese unit decreased activity for about one month after the Mandiant report, but that the reduction may have been because the US government shared information with Internet service providers.
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