The Interstate Compact is a multi-state agreement between participating states to share information and reciprocate. It covers California DUI convictions and California license suspension actions.
California DUI convictionsIf a resident of one state or holder of an out-of-state license has his or her driving privilege suspended or gets convicted of Drunk Driving in another state (e.g. California), the driver's home state can be notified. Your home state may honor and reciprocate, i.e. take action to suspend the driver's license of its resident.
Just because you do not have a California driver's license and even if you do not plan to ever drive again in California, it is critical to know that a suspension of your driving privilege in California may result in a suspension of your home state driver's license. No matter where you live, you probably want to avoid, if not at least minimize, any driver's license suspension action by the California Department of Motor Vehicles.
If you have any specific questions about how the Interstate Compact Act may apply in your case, you may want to contact a DUI/DMV attorney specialist in your state. States vary in their respective actions.