Travel insurance covers a traveler's vacation cost against cancellation and interruption while also providing medical, lost or damaged property and travel delay coverage. Travelers are reimbursed if they have to cancel or interrupt their travel. They are also covered should the need arise for emergency medical treatment, medical evacuation and a number of other benefits.
Insurance for any nationality traveling outside their home country including - visitors to the USA, immigrants, US visa workers, foreign students who study inside the US, US students who study abroad etc.,
Best comparison engine for shopping for trip coverage. It act like an Expedia.com, searching different companies websites for the best prices. They also have web tools to make the shopping process easier.