WASHINGTON, Sept 19 (Reuters) - The U.S. has no evidence that Chinese manufacturer Huawei can produce smartphones with advanced chips in large volume, U.S. Commerce Secretary Gina Raimondo said on Tuesday.

The U.S. government has said Huawei poses “unacceptable” national security risks because of the threat of spying on U.S. telecommunications networks.

The Commerce Department said this month it is working to obtain more information "on the character and composition" of the chip that may violate trade restrictions since they said it must have been made with U.S. technology.

Raimondo told the House Science Committee hearing she was upset by the advanced Huawei smartphone report.

The chairs of the House Foreign Affairs, Energy and Commerce, Armed Services, and select China committees last week urged the Commerce Department to stop granting licenses to Huawei and SMIC, and said it called for additional U.S. pressure "and more effective export controls on our adversaries."

White House National Security Adviser Jake Sullivan said this month the U.S. government is trying to get more information about the Huawei chip.

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