https://www.developer-tech.com/news/2019/may/20/trump-trade-war-china-killing-huawei-devices/

President Trump’s trade war on China has resulted in Google, Qualcomm, Intel, Broadcom, and Xilinx ending their relationship with Huawei.

Trump signed an executive order effectively banning telecoms equipment from foreign firms deemed a security risk. Shortly after, the US Commerce Department added Huawei to its Entity List. Any US firm wanting to have dealings with a company on the list requires prior approval from the government.