President Donald Trump on Wednesday signed an executive order declaring a national emergency and barring U.S. companies from using telecommunications equipment made by firms posing a national security risk, paving the way for a ban on doing business with China's Huawei Technologies Co.
Reuters reported Tuesday that Trump was expected to take action on the long-awaited proposal this week.
The executive order invokes the International Emergency Economic Powers Act, which gives the president the authority to regulate commerce in response to a national emergency that threatens the United States.
The order directs the Commerce Department, working with other government agencies, to draw up a plan for enforcement.