Passport Update: Temporary Flexibility as of June 8, 2007
As of June 8, 2007 U.S. citizens traveling to Canada, Mexico, the Caribbean, and Bermuda who have applied for but not yet received passports can temporarily enter and depart from the United States by air with a government issued photo identification and Department of State official proof of application for a passport through September 30, 2007. Most travelers can find information here.