Cal.Sup.Ct.;
14-990

Since 1976, federal law has mandated that a “district court of three judges shall be convened . . . when an action is filed challenging the constitutionality of the apportionment of congressional districts . . . ,” 28 U. S. C. §2284(a), and has provided that “the judge [presented with a request for a three-judge court] shall, unless he determines that three judges are not required, immediately notify the chief judge of the circuit, who shall designate two other judges” to serve, §2284(b)(1).