The backdoors were inserted for law enforcement use into carrier equipment like base stations, antennas and switching gear, the Journal said, with US officials reportedly alleging they were designed to be accessible by Huawei.

There's a basic principle here that I think the US doesn't understand: there is no such thing as a backdoor only for one group. Any equipment with backdoors is inherently insecure. The US dug their own grave and they're blaming Huawei for selling the shovels.