n 2013 the supreme court struck down which part of the 1965 voting rights act
Shelby County v. Holder On June 25, 2013, the Court ruled by a 5-to-4 vote that Section 4(b) is unconstitutional because the coverage formula is based on data over 40 years old, making it no longer responsive to current needs and therefore an impermissible burden on the constitutional principles of federalism and equal sovereignty of the states.[2][3] The Court did not strike down Section 5, but without Section 4(b), no jurisdiction will be subject to Section 5 preclearance unless Congress enacts a new coverage formula.[4]