The majority of international health insurance plans for expatriates are, however, globally portable. This allows foreign nationals overseas to move fluidly form one country to the next without periods of no cover. This is a significant difference from local health insurance plans and makes these policies attractive to many individuals. For the most part, however, an international health insurance policy will not cover an individual when they have returned to their home nation ("home country coverage"), making the investment practical only if the policyholder is planning to be overseas for an extended period of time. Some policies also cover treatments in a person's home country often for a limited period of time.