Answer: A prison sentence
Explanation: a formal sanction is any sanction by law and is enforced by an authoritative source.
The others would all be informal sanctions
Stare decisis is a legal doctrine that obligates courts to follow historical cases when making a ruling on a similar case. ... Simply put, it binds courts to follow legal precedents set by previous decisions. Stare decisis is a Latin term meaning "to stand by that which is decided."
Answer:
He signed the Civil Rights Act of 1964