Probably payback for the U.S. raking Chinese company Huawei over the coals.
In case you've forgotten, a congressional committee accused Huawei of installing spyware into the equipment it was selling, and even hauled the company president into the Capitol, forcing him to give testimony. Uselessly, of course, as that was a hanging committee, and there was no way the poor guy could prove his innocence. It's impossible to prove a negative. There was an enormous media circus, totally humiliating the company.
Worse, thanks to Edward Snowden, we now know that the U.S. corporations (like Huawei's competitor, Ciso) were the ones installing spyware into their products.
So now it's payback time.