https://history.house.gov/Historical-Highlights/1800-1850/The-House-of-Representatives-instituted-the-%E2%80%9Cgag-rule%E2%80%9D/ https://history.house.gov/Hist

https://history.house.gov/Historical-Highlights/1800-1850/The-House-of-Representatives-instituted-the-%E2%80%9Cgag-rule%E2%80%9D/ https://history.house.gov/Historical-Highlights/1800-1850/Th... For some number of years, even the discussion of slavery bans was prohibited in US Congress.