If you currently live in the U.S. you will have a couple of options. There are endorsements available through your current Home and Auto policies for rented/non-owned cars.
If you have a credit card, then the credit card might offer car rental insurance if it is used to purchase the rental.
If you don't have Home/Auto insurance in the U.S. or a credit card then you can always purchase rental insurance through the rental agency.
If you currently live in the U.S. you will have a couple of options. There are endorsements available through your current Home and Auto policies for rented/non-owned cars.
If you have a credit card, then the credit card might offer car rental insurance if it is used to purchase the rental.
If you don't have Home/Auto insurance in the U.S. or a credit card then you can always purchase rental insurance through the rental agency.
I hope these options help.