This “act to enforce the fifteenth amendment to the Constitution” was signed into law 95 years after the amendment was ratified. In those years, African Americans in the South faced tremendous obstacles to voting, including poll taxes, literacy tests, and other bureaucratic restrictions to deny them the right to vote. They also risked harassment, intimidation, economic reprisals, and physical violence when they tried to register or vote. As a result, very few African Americans were registered voters, and they had very little, if any, political power, either locally or nationally.
In 1964, numerous demonstrations were held, and the considerable violence that erupted brought renewed attention to the issue of voting rights. The murder of voting-rights activists in Mississippi and the attack by state troopers on peaceful marchers in Selma, AL, gained national attention and persuaded President Johnson and Congress to initiate meaningful and effective national voting rights legislation. The combination of public revulsion to the violence and Johnson's political skills stimulated Congress to pass the voting rights bill on August 5, 1965.
The legislation, which President Johnson signed into law the next day, outlawed literacy tests and provided for the appointment of Federal examiners (with the power to register qualified citizens to vote) in those jurisdictions that were "covered" according to a formula provided in the statute. In addition, Section 5 of the act required covered jurisdictions to obtain "preclearance" from either the District Court for the District of Columbia or the U.S. Attorney General for any new voting practices and procedures. Section 2, which closely followed the language of the 15th amendment, applied a nationwide prohibition of the denial or abridgment of the right to vote on account of race or color. The use of poll taxes in national elections had been abolished by the 24th amendment (1964) to the Constitution; the Voting Rights Act directed the Attorney General to challenge the use of poll taxes in state and local elections. In Harper v. Virginia State Board of Elections, 383 U.S. 663 (1966), the Supreme Court held Virginia's poll tax to be unconstitutional under the 14th amendment.
Because the Voting Rights Act of 1965 was the most significant statutory change in the relationship between the Federal and state governments in the area of voting since the Reconstruction period following the Civil War, it was immediately challenged in the courts. Between 1965 and 1969, the Supreme Court issued several key decisions upholding the constitutionality of Section 5 and affirming the broad range of voting practices for which preclearance was required. [See South Carolina v. Katzenbach, 383 U.S. 301, 327-28 (1966) and Allen v. State Board of Elections, 393 U.S. 544 (1969)]
The law had an immediate impact. By the end of 1965, a quarter of a million new black voters had been registered, one-third by Federal examiners. By the end of 1966, only 4 out of the 13 southern states had fewer than 50 percent of African Americans registered to vote. The Voting Rights Act of 1965 was readopted and strengthened in 1970, 1975, and 1982.