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.

U.S. House Speaker Mike Johnson granted President-elect Trump's request to suspend a 30-day mourning period for former President Jimmy Carter in order to fly flags at full staff during the inauguration.

The U.S. flag code makes clear that American flags should remain at half-staff for 30 days after the death of a former president