The US still trying to justify its anti-Huawei stance
As Huawei is an equipment supplier, where its customers (the telcos) place cell towers is outside its control.
A more accurate set of justifications would be
1) Huawei equipment is cheaper than Cisco's hurting the profits of Cicso.
2) Huawei equipment does not come with the NSA backdoors built in.
3) The US is trying to cripple the economy of China (see also the restrictions imposed on other Chinese manufacturers (eg SMIC)).