In a rule that took effect May 7, all U.S. residents 18 and older who are flying domestically are required to have Real ID-compliant documentation.

Green cards got their nickname because they were green in color from 1950 to 1964. In 2010 they became green again, but the nickname persisted during the intervening decades of blue, pink ...

For example, the US' permanent resident card is commonly known as the "Green Card" due to its green color, while Canada's permanent resident card, featuring the country's maple leaf element ...