LOS ANGELES (AP) — Frustrated would-be travelers are overwhelming U.S. offices as easing COVID-19 travel restrictions have unleashed a pent-up demand for passports. At the West Los Angeles Federal Building, hundreds of passport applicants camped out overnight this week for same-day appointments — only to be told that walk-ins were no longer being taken. Wait times for new passports and renewals are now up to 18 weeks, causing many to seek expedited appointments at understaffed agencies for travel in the next few weeks. But even expedited appointments can take up to 12 weeks. Officials encouraged those without immediate travel plans to renew their passports by mail.