Amid escalating trade war tensions with China and a lengthy dispute over Huawei Technologies over espionage allegations, President Trump declared a national emergency that bans U.S. telecommunications companies from using equipment from foreign firms that could threaten national security.

The Commerce Department followed up immediately by placing Huawei Technologies and 70 affiliates on the Bureau of Industry and Security (BIS) Entity List to “prevent American technology from being used by foreign owned entities in ways that potentially undermine U.S. national security or foreign policy interests,” Commerce Secretary Wilbur Ross said in a statement.

Finding "that foreign adversaries are increasingly creating and exploiting vulnerabilities in information and communications technology and services, which store and communicate vast amounts of sensitive information, facilitate the digital economy, and support critical infrastructure and vital emergency services, in order to commit malicious cyber-enabled actions, including economic and industrial espionage against the United States and its people," Trump's order prohibits "any acquisition, importation, transfer, installation, dealing in, or use of any information and communications technology or service...where the transaction involves any property in which any foreign country or a national thereof has any interest" and has been determined to be detrimental to the U.S.

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