The process of banning them started with Obama: https://www.dailymail.co.uk/news/article-2300518/Obama-BANS-U-S-government-buying-Chinese-technology-cyber-atta

The process of banning them started with Obama: https://www.dailymail.co.uk/news/article-2300518/Obama-BANS-U-S-government-buying-Chinese-technology-cyber-attack-fears.html https://www.dailymail.co.uk/news/article-2300518/Obama-BANS-... After the Snowden revelations, it is interesting to see that other countries like Brazil or South Africa have not banned US equipment, software and gear. Markets clearly have a lot of inertia, or they just don't care about potential backdoors.