A Washington Post live-updates page explains air passenger rights after a nationwide ground stop halted U.S. flight traffic for over four hours: no federal rule requires compensation for cancellations or delays, airlines voluntarily compensate only for disruptions within their control, and a refund is required if a passenger chooses not to fly. The page also follows Mark Carney's trade talks with Trump, Judge Ana C. Reyes's ethics inquiry into administration lawyers, a Microsoft outage that disrupted services worldwide, and Life Hax advice on a dog-unfriendly family visit.