I echo the sentiment (regarding Trump being a much, much worse outcome), but you can already "Kiss Hong Kong goodbye". It's part of China, they have cracked down, and the two systems has been reduced to like 1.5 systems ahead of schedule.

I am genuinely curious what you think either presidential candidate would do about this, considering they will continue to espouse the One China policy. Where they might differ is in their support of Taiwan, whose status is much more murky.

Hong Kong though? Pretty sure that ship sailed once the UN decided: no Empire no longer, and the 99 year lease came to an end.