For example, if you have myasthenia gravis, you may notice that during a meal, your jaw muscles become tired and weak, interfering with your ability to chew food. After you have rested for a little while, the muscles may become strong again, allowing you to resume eating.
Reentry Permits. If you hold a green card and know in advance that you must be outside the United States for more than one year, it's worth applying to USCIS for a reentry permit. This lets you to stay away for up to two years. See â Reentry Permits: Preparing Green Card Holders for Long Absences from the U.S. â.
You can use your Green Card to: 1  Prove employment eligibility in the United States when completing the Form I-9, Employment Eligibility Verification. 2  Apply for a Social Security Card and a state issued driverâs license. A Green Card is valid for readmission to the United States after a trip abroad if you do not leave for longer than 1 year. If your trip will last longer than 1 year, a reentry permit is needed.