Those are government actions.. and if you want the reasoning, then you can read the report from the congressional investigation into Huawai and ZTE: https://intelligence.house.gov/sites/intelligence.house.gov/...

Until the findings of that report have been reversed, Huawai will continue to find the US Government hostile to their actions, and willing to put up roadblocks wherever they can to stop Huawai's entry into the US market.