William J. Brennan, Jr., Katzenbach v. Morgan — Opinion of the Court
“ Here again, it is enough that we perceive a basis upon which Congress might predicate a judgment that the application of New York's English literacy requirement to deny the right to vote to a person with a sixth grade education in Puerto Rican schools in which the language of instruction was other than English constituted an invidious discrimination in violation of the Equal Protection Clause. ”
