Would the US make concessions on sovereignty claims on states like California, Hawaii, Alaska, Texas or Florida, in order to make deals with foreign countries? 

Would Canada make concessions on sovereignty claims on territories like Vancouver Island, Haida Gwaii, Newfoundland, Nova Scotia, or the Arctic, in order to make deals with foreign countries? 

If not, then why expect China to make concessions on Taiwan?

Sovereignty and territorial wholeness and integrity is not something tradeable or negotiable. Trump shouldn't treat everything like in business.