Enforcement (noun)

1. The act of enforcing a law or regulation.
2. The act of making certain that rules or laws are obeyed.
3. The act of ensuring compliance with a rule, order or request.
4. The act of carrying out an order or decision.

Origin:

Late middle english: from old french enforcer, from en- (expressing causative) + forcer "compel", from latin forcare.

Examples:

1. Enforcement of the laws on pollution.
2. The enforcement of traffic regulations.
3. The enforcement of a court order.
4. There was a shortage of resources for the enforcement of the law.
5. The enforcement of immigration laws.