President Joe Biden on Sunday abruptly canceled plans to spend the Presidents Day holiday at home in Delaware amid the mounting crisis over what officials say is a planned Russian invasion of Ukraine. The White House had announced shortly after 2:30 p.m. that Biden would leave DC around 5 p.m. to fly to Wilmington, raising the possibility that the commander in chief would update reporters on developments before boarding the Marine One chopper on the White House’s South Lawn.