Discontinuance of Additional Pages for U.S. Passports (as of Dec 31, 2015):
For cost and security reasons, the U.S. Department of State has phased out the option of additional visa pages for U.S. passports. Beginning October 1, 2014, all Embassies/Consulates worldwide will issue only 52-page passport books for full-validity passports. The thinner 28-page book option is no longer available. Starting January 1, 2016, applicants who need extra pages will need to apply to renew their passports and be issued the standard 52-page book.