The script was written by FBI Director J. Edgar Hoover and showed evidence of involvement by members of the Communist Party USA in the incitement and leadership of the riots.
In 1963, Lewis was named National Field Director of Young Americans for Freedom, a conservative youth group inspired by publisher William F. Buckley Jr.
He continued his lecturing and debating as a means of organizing YAF chapters on campuses and to recruit support for the presidential candidacy of Sen. Barry Goldwater (R-AZ).
However, as a result of the boycott the U.S. could no longer purchase metallurgical-grade chromium ore (a mineral needed for national defense) from Rhodesia, and was forced to import it from the Soviet Union—which, Lewis pointed out, had perfected a "no-man, no vote" system.
After heated debate in the House and Senate, the measure - Section 503 of the Military Procurement Authorization Act of 1971 - was approved and, on November 7, 1971, signed into law by President Richard Nixon.