How do I renew my travel permit? For information on how to renew a travel permit, head over here. Related articles What's the minimum income needed to apply for a green card? Can I travel domestically while my green card application is pending? Can I travel outside the United States with my existing travel/work combo card, while my renewal applications are pending? If I am applying for a marriage-based green card outside the United States, can I apply for a Social Security number? Can I do volunteer work while I am waiting for my work authorization?