The Nixon administration sought to enjoin publication of a classified history of U.S. involvement in Vietnam leaked by Daniel Ellsberg. Six days later, a 6–3 Court ruled against the government per curiam: any prior restraint of the press bears a 'heavy presumption against its constitutional validity,' which the government had not overcome. Justice Black's concurrence remains a stirring statement of press freedom: 'The Government's power to censor the press was abolished so that the press would remain forever free to censure the Government.'