W. Va. Code § 62-14A-1
The Governor, whenever required by the executive authority of the United States pursuant to the Constitution and laws thereof, shall deliver over to justice any person found within this state who shall be charged with having committed any crime without the jurisdiction of the United States.
The Governor, though not so required, may in his or her discretion deliver over to justice any person found within this state who shall be charged with having committed without the jurisdiction of the United States any crime except treason, which by the laws of this state, if committed herein, would be punishable by death or imprisonment in the penitentiary. The Governor shall require such evidence of the guilt of the person so charged, as would be necessary to justify an indictment against the person, had the crime charged been committed in this state. The expense of the apprehension and delivery shall be defrayed by those to whom the delivery is made.
W. Va. Code § 62-14A-1