The proof of travel should include your name, travel dates, and proof of international destination. You can submit a print out of your flight itinerary, hotel reservation, travel itinerary from a travel agent, online booking confirmations, e-tickets, cruise tickets, and even a business letter.
A passport is an internationally recognized travel document that verifies the identity and nationality of the bearer. Only the U.S. Department of State and U.S. Embassies and Consulates have the authority to grant, issue or verify U.S. passports.
Authority letters to collect passports are necessary if you're unable to collect your new travel document in person. With this document, a designated person or courier company will be able to pick up a passport on the applicant's behalf without any issues.
Routine processing takes between 4 and 6 weeks. Expedited processing takes between 2 and 3 weeks. Passports and supporting documents are mailed back to you in multiple mailings. Supporting Documents Delivery: Expect up to 6 weeks for citizenship documents to be mailed back to you.