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FCC chairman to be "proactive" on integrity of U.S. communications supply chain

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WASHINGTON, March 23 (Reuters) - Federal Communications Commission chairman Ajit Pai said in a letter released Friday he plans to take "proactive steps" to ensure the integrity of the communications supply chain after concerns about by Chinese firms.

The top U.S. telecommunications regulator said in a letter to lawmakers that he shares their concerns about the "security threat that Huawei and other Chinese technology companies pose to our communications networks." Earlier this week Best Buy Co Inc, the largest U.S. consumer electronics retailer, decided to cut ties with Chinas Huawei Technologies Co Ltd , Reuters reported, amid heightened scrutiny on Chinese tech firms in the United States. (Reporting by David Shepardson and Diane Bartz Editing by Chizu Nomiyama)