President Donald Trump’s proposed “National Garden of American Heroes” has hit another setback as a coalition of Washington-era preservation and cultural groups sues to halt its construction.

The lawsuit, filed Monday, argues that the statuary garden—featuring roughly 250 Americans and planned for West Potomac Park—cannot proceed without congressional approval. The filing seeks to halt the project, which is already underway on a tract connected to the National Mall, as statues are commissioned and funding is secured. The sculpture garden was first mentioned by Trump in July 2020, during his first term.