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.

Flags are supposed to fly at half-staff through the end of January out of respect for former President Jimmy Carter , who died on Dec. 29. A large flag on Trump’s property in Palm Beach was initially lowered to half-staff according to protocol but has since been raised in the days after Carter was buried Thursday in his hometown of Plains, Georgia.

Flags are flying at half-staff today to honor former President Jimmy Carter. For how long? Here's the protocol.