Which would be an exception to the COmity clause is it buying and selling property in different states charging more money for out-of-state college tuition really traveling between states or recognizing on marriages from all states

An exception to the Comity Clause of the United States Constitution would be recognizing on marriages from all states. The Comity Clause, also known as the Full Faith and Credit Clause, requires states to recognize the public acts, records, and judicial proceedings of other states.