legislationPassedBy

This term is proposed for full integration into Schema.org, pending implementation feedback and adoption from applications and websites.

Thing > Property > creator > legislationPassedBy

The person or organization that originally passed or made the law : typically parliament (for primary legislation) or government (for secondary legislation). This indicates the "legal author" of the law, as opposed to its physical author.
Values expected to be one of these types
Organization
Person
Used on these types
Legislation
Super-properties
creator