A state funeral is a national remembrance event marking the life of Americans who have made a huge contribution to public life.
Most presidents receive the honour if their family agrees.
It usually lasts seven to 10 days and includes ceremonies in the hometown of the deceased, as well as in Washington.
The last president to receive a state funeral was George HW Bush in 2018.
Two years later, former Supreme Court Justice Ruth Bader Ginsburg lay in state at the US Capitol, 15 years after civil rights icon Rosa Parks became the first woman to receive the honour, external.
When astronaut Neil Armstrong died in 2012, there were calls for a state funeral, but his family instead chose a private ceremony in Ohio.
