“The Washington Post reported Thursday that design details for the structure titled “Warriors’ Circle of Honor” are still being finalized, though the memorial has been in the works for years.

In 1994, Congress passed legislation mandating the memorial be built at the Smithsonian's National Museum of the American Indian, which opened 10 years later. But the legislation didn't allow the museum to raise money for it. In 2013, new legislation allowed fundraising.