Twelve states have order ordered flags be raised on Monday to acknowledge the inauguration for incoming-President Donald Trump.

Here's why flags are flying at half-staff, and why President-elect Donald Trump isn't thrilled with the decision.

Ahead of the presidential inauguration, several other governors have ordered that flags be temporarily raised. On Wednesday, a spokesperson for California Gov. Gavin Newsom announced that flags in the state would be temporarily raised for the presidential inauguration.

Despite the national mourning period for the late Jimmy Carter, Washington's Gov. Bob Ferguson is directing flags to be raised Monday for Inauguration Day.

GOP governors of at least eight states ordered flags to be flown at full-staff on Inauguration Day, bucking tradition by raising flags before the end of a customary 30-day mourning period following the death of former President Jimmy Carter.