If I am hiring a car in USA, how can I ensure I have adequate liability cover?

Check with the car hire company exactly how much third party liability cover is provided. Some car rental companies only provide the legislated state minimum; this varies between states and can be as low as $10,000. We suggest you have at least $1,000,000 third party liability cover - you can purchase further cover if it is not included as standard from your car rental company.