WASHINGTON -- Attention, international business travelers: The U.S. government will stop providing extra pages for visas and stamps when your passports fill up.As of Jan. 1, the State Department is eliminating the 24-page inserts that Americans can buy when their passports lack space for entry and exit stamps.A statement says the decision will enhance security and bring the U.S. in line with international passport standards.That means if your U.S. passport fills up, you'll soon have to buy a new one.U.S. citizens can purchase a 28-page or 52-page passport.To help frequent travelers, the department says it's issued the larger passport at no additional cost to all applicants outside the U.S. since October 2014.It will accept requests for extra pages through the end of the year.