Can green cards in the United States and Canada be used universally? A friend of mine illegally immigrated to the United States more than ten years ago and now wants to use a green card. What should I

Can green cards in the United States and Canada be used universally? A friend of mine illegally immigrated to the United States more than ten years ago and now wants to use a green card. What should I do? thank you Green cards in two countries are not universal, just like your ID card in China can't be used in the United States. But as long as you have a green card from one of the countries, for example, you can go to Canada, Britain, France, Australia and other countries without a visa, but the green card cannot be used universally, which means you can't settle and work in other countries for a long time. In addition, illegal immigrants can't get a green card unless they change their normal status. I wish I could say these words.