President Donald Trump has declared a national emergency over "threats against information and communications technology and services in the United States".
In a statement, the White House said the move is designed "to protect America from foreign adversaries who are actively and increasingly creating and exploiting vulnerabilities in information and communications technology infrastructure and services in the United States".
It is expected to precede a ban on US firms from using foreign telecoms that pose national security risks.
While the order does not name any company, many believe it will impact Chinese tech giant Huawei as trade tensions between the two nations escalate.

Venezuela says 116 prisoners released, rights groups cite much lower figures
Top Australian writers' festival cancelled after Palestinian author barred
Four migrants die in US immigration custody over first 10 days of 2026
Landmark Myanmar Rohingya genocide case opens at UN's top court
