“If your interpretation were correct, then states couldn’t enter into reciprocity agreements for concealed carry licenses. “
Actually, licenses are covered in other clauses in the Constitution, hence driver’s licenses. The fact they don’t honor them is a constitutional violation.
You are referring to the “full faith and credit” clause that has been litigated many times over the years as to the extent of it’s meaning. Currently, concealed carry licenses is not part of the full faith and credit clause, so individual states must enter into agreements to recognize each others’ licenses.
And Article 1 Section 10 still applies to States and foreign governments, not among the various states.