Inmates sentenced for any term by any court of the United States may be received by the superintendent of a state correctional institution and kept there in pursuance of their sentences. The director may transfer inmates at state correctional institutions to the federal bureau of prisons.
Iowa Code § 904.504
83 Acts, ch 96, §91, 159; 84 Acts, ch 1184, §13 85 Acts, ch 21, §22, 54