Yes, all laws should have expiration dates built in, and the more controversial the law is the shorter that expiration should be. A law passed 51-49 should not

Yes, all laws should have expiration dates built in, and the more controversial the law is the shorter that expiration should be. A law passed 51-49 should not persist after that legislative period has passed. A law passed 100-0 may be reasonable to persist for 50 years.