enforce

V. ensure observance of laws and rules

The laws banning smoking in public places are rarely enforced in France.

Police officers are more likely to enforce the traffic code against black drivers than white ones.

Although laws against same-sex sodomy were rarely, if ever, enforced, they did have many important collateral effects on gays and lesbians in a variety of areas, including adoption and employment.

The U.S. Supreme Court jolted environmental groups Monday by ruling unanimously that private citizens can't sue a federal agency for allegedly failing to enforce a law protecting potential wilderness areas from off-road vehicles.

You can have a thousand laws on paper, but they don't mean anything unless the authorities enforce them.

law enforcement

the activity of making certain that the laws of an area are obeyed

law enforcement official (or officer)

N.

If you're involved in any aspect of law enforcement - as a patrolman, investigator, chief, or special agent - The U.S. Law Enforcement Conference and Exposition is an event you can't afford to miss. http://www.uslawenforcement.com/