Similarly US can play the same game, and use National security as a concern . China has to follow US rules in US turf.
To convince US, Huawei needs to hire all US engineers to rewrite all the firmware and software to convince US that their product is safe for US use.

Yes it's up to the president to allow Apple, Google to spy on their own and not allow China to do the same in US.

Remember in your own words, doing business in US , US rules.