WASHINGTON, Dec 9 (Reuters) - U.S. government agencies

will hold a classified briefing for the House of Representatives

on Tuesday on China's alleged efforts known as Salt Typhoon to

infiltrate American telecommunications companies and steal data

about U.S. calls, officials said on Monday.

The FBI, the Office of the Director of National

Intelligence, Federal Communications Commission Chair Jessica

Rosenworcel, the National Security Council and the Cybersecurity

and Infrastructure Security Agency are set to take part in the

2:15 p.m. ET briefing for all House lawmakers after holding a

similar briefing last week for senators. The White House last

week said at least eight telecommunications and telecom

infrastructure firms in the United States had been impacted.