W. Va. Code § 31C-2-7

A credit union incorporated under this chapter may conduct business outside of this state in other states or territories where it is permitted to conduct business as a credit union. The activities and records of such credit union business conducted outside this state remain fully under the jurisdiction and supervision of the commissioner. Prior to the establishment of any branch or service facility outside this state, a credit union shall provide notice to, and obtain written approval of, the commissioner. The creation of such facilities must be approved by a majority vote of the credit union's board of directors.