The National Park Service (NPS) has raised concerns that the proposed 250-foot 'triumphal arch' by the Trump administration could have adverse effects on nearly 40 historic landmarks in Washington, D.C. The review, part of the Section 106 process under the National Historic Preservation Act, highlights potential disruptions to iconic sites such as the Lincoln Memorial, Arlington National Cemetery, and the Washington Monument. Critics argue the monument's scale would overshadow these landmarks, breaking the symbolic unity of the area. Historic preservation experts, including Mical Durak of Arlington County, have criticized the design for its 'inappropriate scale' and 'intentional dominance' over the landscape. Despite public opposition, the National Capital Planning Commission has given preliminary approval to the project, which faces legal challenges from Vietnam War veterans and ongoing scrutiny from the U.S. Commission of Fine Arts. The Trump administration claims the monument will celebrate American achievement as part of the nation's 250th anniversary, but opponents warn it risks overshadowing the values represented by existing memorials.