Many other countries have already decided to take those steps to ban them or certain components of theirs from markets. This isn't something unique to the US.Yup. Let other countries decide if they want to ban Huawei from their markets.
https://www.bbc.com/news/world-48309132
Australia effectively banned Huawei and another Chinese telecom firm, ZTE, last year when it applied national security rules to companies supplying equipment to telecoms firms.
New Zealand has blocked Huawei from supplying one mobile network with 5G equipment, but has not yet ruled out all Huawei 5G contracts completely.
These two countries, along with the UK and Canada, make up the so-called Five Eyes intelligence-sharing network with the US.
The UK is still reviewing its 5G telecoms policy and may allow Huawei to supply "non-core" 5G components, such as antenna masts.
Canada is still weighing up its decision over Huawei.
The United States has effectively blocked all Huawei involvement in its 5G networks.