alt Hacker Newsthe US federal government historically banned books under the Comstock Act of 1873 which is still on the books and is still active federal law. it only currently isn't being enforced following some cultural changes in the 1960s. another change in the cultural winds could bring it back unfortunately
don't you have lots of those dormant old timey laws that would be promptly invalidated as unconstitutional if an attempt to enforce them was made these days, like sodomy laws were?