crack down
verb
- punish something more harshly, suppress, harsher punishment, becoming strict
Wiktionary
Pronunciation: /kɹæk ˈdaʊn/
verb
- To take harsh action (against), as when enforcing a law more stringently than before.
“The authorities are trying to crack down on drunk driving during the holidays.”
“At this point they're hoping that the government will crack down and will put an end to deceptive rental offerings.”