In this case, we must decide whether the Virginia Freedom of Information Act... violates either the Privileges and Immunities Clause of Article IV of the Constitution or the dormant Commerce Clause. The Virginia Freedom of Information Act (FOIA), provides that "all public records shall be open to inspection and copying by any citizens of the Commonwealth," but it grants no such right to non-Virginians.... We hold, however, that petitioners' constitutional rights were not violated. By means other than the state FOIA, Virginia made available to petitioners most of the information that they sought, and the Commonwealth's refusal to furnish the additional information did not abridge any constitutionally protected privilege or immunity. Nor did Virginia violate the dormant Commerce Clause. The state Freedom of Information Act does not regulate commerce in any meaningful sense, but instead provides a service that is related to state citizenship.