"No laughing matter"
In 1964, the Department of Labor, in an effort to protect American jobs, instituted restrictions to make it harder for foreign musicians to enter the country. The press reported that these new requirements would prevent the Beatles from performing in the U.S. Hundreds of distraught teenagers deluged President Johnson and Secretary of Labor Willard Wirtz with letters and petitions like this one.
National Archives, General Records of the Department of Labor