; (2) the authority granted to Congress under section 5 of the Fourteenth Amendment to the Constitution gives Congress the power to enact laws to enforce section 2 of such amendment, which requires Representatives to be apportioned among the several States according to their number; (3) the authority granted to Congress under section 5 of the Fourteenth Amendment to the Constitution gives Congress the power to enact laws to enforce section 1 of such amendment, including protections against excessive partisan gerrymandering that Federal courts have not enforced because they understand such enforcement to be committed to Congress by the Constitution; (4) of the authority granted to Congress to enforce article IV, section 4, of the Constitution, and the guarantee of a Republican Form of Government to every State, which Federal courts have not enforced because they understand such enforcement to be committed to Congress by the Constitution; (5) requiring States to use uniform redistricting criteria is an appropriate and important exercise of such authority