President-elect Donald Trump has expressed frustration that flags will be flying at half-staff when he takes office later this month. It's an action put in place by President Joe Biden to honor the late President Jimmy Carter, who died Sunday at 100 . It's not a timeline that Trump can do anything about — until after he takes office. Here's what to know about why flags are lowered when a president dies, who can issue that order and how long the process lasts: Why are U.S. flags being flown at

Tag-uri: Donald Trump