In a proclamation issued Dec. 29, Biden ordered flags across the U.S. to be flown at half-staff for 3 days "in honor and tribute to the memory of President James Earl Carter Jr. and as an expression of public sorrow."

Flags are returning to full staff now that 30 days have passed since the death of former President Jimmy Carter.

Flags across Arizona and the U.S. have been flying at half-staff for nearly a month, but they will soon return to full-staff. Here's what to know