A piece of the blue coating floats among algae at the Lincoln Memorial Reflecting Pool Sunday, June 21, 2026, on the National Mall in Washington. (AP Photo/Jon Elswick

Separation is seen in the blue coating on the bottom of the Lincoln Memorial Reflecting Pool, Monday, June 22, 2026, in Washington. (AP Photo/Mark Schiefelbein)

Fencing that will secure an area around where fireworks for the Fourth of July will be launched is seen near the Lincoln Memorial Reflecting Pool and the World War II Memorial Tuesday, June 23, 2026, in Washington. (AP Photo/Jon Elswick)

Fencing that will secure an area around where fireworks for the Fourth of July will be launched is seen near the Lincoln Memorial Reflecting Pool and the World War II Memorial Tuesday, June 23, 2026, in Washington. (AP Photo/Jon Elswick)

People wave at President Donald Trump's motorcade as it passes by Tuesday, June 23, 2026, in Pennsylvania. (AP Photo/Julia Demaree Nikhinson)

President Donald Trump speaks to the media after disembarking Air Force One at Reading Regional Airport, Tuesday, June 23, 2026, in Reading, Pa. (AP Photo/Julia Demaree Nikhinson)

President Donald Trump prepares to board Air Force One, Tuesday, June 23, 2026, at Joint Base Andrews, Md. (AP Photo/Julia Demaree Nikhinson)

People wave as President Donald Trump's motorcade goes by Tuesday, June 23, 2026, in Reading, Pa. (AP Photo/Julia Demaree Nikhinson)