You generally need to apply for and obtain a travel document before you leave the United States. Before planning travel, please consider USCIS processing times.The County Clerk's Office performs in-person application review and acceptance before forwarding your documents to the U.S. Department of State for processing. Union County Clerk Advises Residents on Passport Expiration Dates and Travel. Use our Form Filler to fill out your form and print it. For the best experience, use a desktop or laptop computer. Travel Authorizations must be created and approved prior to the travel dates. Fill out your form(s) online and print it. All required supporting documents for the form(s). Fill and submit AMC Form 140, Space Available Travel Request, to your desired AMC Passenger Terminal.