Though federal flag code dictates a 30-day mourning period after the death of a former president, not everyone is complying. Here's what we know.

With the death of President Jimmy Carter at age 100, President Joe Biden has ordered flags to fly at half-mast.

In President Joe Biden’s proclamation about the death of Carter, he directed that flags be flown at half-staff “as an expression of public sorrow” for 30 days—a period of