Usa & Canada is an insurance policy from icarhireinsurance which protects you against high excess charges if something happens to your hire car when driving in the majority countries across the World (see below for exceptions).
CDW/LDW are offered under separate policies to SLI by the rental companies, so you can still buy our USA and Canada policy to get great savings from iCarhireinsurance and buy any additional 3rd party liability insurance you feel you need from the rental company.
Your car rental company will usually give you the option to buy CDW/LDW and SLI cover for the USA and Canada, as well as excess insurance cover when you collect your hire car. But since these are 'last minute' purchases you will end up paying more than you need to for insurance cover - and the roof, windows, undercarriage and tyres may still not be included in the price. iCarhireinsurance's USA and Canada Policy costs just from £5.99 a day*1, or £79.99 for an annual policy, and can be great value even if you only hire a car once in the entire year. It replaces the CDW/LDW and Super CDW policies that you will be offered by your rental company, but does not replace the separate Supplemental Liability Insurance (SLI) that you will also be offered at the collection point. If you feel that you need additional 3rdparty liability protection you should check the local arrangements with your rental company before you travel