As late as 1985 there were still 26 states with no drunk driving laws. You could map a 3,700 mile drive from Key West in Florida to the Idaho – Canada border. That would allow you to legally drink the whole drive.
In 1927 several million people in the United States sent over 100,000 petitions urging Congress to adopt the metric system.
In 1958, The Lumbee Indians of North Carolina learned of a KKK rally being held in the woods nearby. They attacked the KKK rally and broke it up. The Klan was never active in the area again. During the ensuing madness the Klan leaders wife drove into a ditch… and then some Lumbee men helped pull her out and sent her on her way.
In the 60s, the US military secretly sprayed (possibly radioactive) experimental chemicals, like zinc cadmium, on thousands of residents of poor neighborhoods in St. Louis, without their knowledge or consent, to see what would happen.
The United States gave asylum to Nazi war criminals for decades and then tried to cover it up until they were sued under the Freedom of Information Act.
Until 1987, broadcasters in the United States were legally required by the FCC to present both sides of issues.
The single largest infiltration of the United States government in history was committed by the Church of Scientology in order to purge unfavorable records about Scientology and its founder L. Ron Hubbard.
President Franklin D Roosevelt received a truckload of Yuengling beer delivered to the Whitehouse the day prohibition was ended.
As many as 1.2 million US citizens of Mexican descent were forced out of the United States from 1929-1939 by federal and local authorities. It was claimed that the expulsions would free up jobs for “real Americans” during the Great Depression.