The Amendments.
Few non-citizens know anything about the United States Constitution as written by its wise authors.
We all know of its ‘errors’, though. Bits those smarty-pants left out.
Freedom of Speech aka The First Amendment.
Carrying guns aka the Second Amendment aka Another Bit Left Out.
Taking the Fifth aka the Fifth Amendment.
We know more about United States people, culture, and history through the ‘mistakes’ made in its source of authority.
Think about that next time someone red pens your work.