The Executive Warrant appears regular on its face. Therefore, the State has established a prima facie case, e.g., Ex parte Bobbitt, 468 S.W.2d 386 (Tex.Cr.App. 1971); Ex parte Buel, 468 S.W.2d 385 (Tex.Cr.App. 1971). Appellant has not refuted such prima facie case.