There will be security implications when Americans are hypothetically mostly using Chinese tech (Weibo, Didi, Baidu), should it leapfrog a kneecapped US tech industry - unless the US also bans Chinese tech - which would isolate the US and make it less competitive while ceding tech leadership in the rest of the world.

Also, all the botnet-, APT-, ransomware and CSAM investigation & disruption ops would be hampered when the #1 desktop operating system, #1 & #2 phone OS authors, #1 network equipment manufacturer,#1 social network and top 3 cloud providers are no longer under your legal jurisdiction