Enforce (verb)

1. To make sure that (a law, rule, etc.) is obeyed.
2. To ensure compliance with (a rule or regulation) by penalties or other means.

Origin:

From old french enforcer, from en- ("in") + force ("force").

Examples:

1. The police enforce the law.
2. The company enforces safety regulations.
3. The government enforces immigration laws.
4. The school enforces a dress code.
5. The court enforces the judgement.