President Donald Trump blamed ABC reporter Jonathan Karl and vandals for the Lincoln Memorial Reflecting Pool’s peeling seal and algae growth after the Trump administration’s $15 million renovation.

The pool turned bright green from an algae bloom following the installation of “American flag blue” coating at the bottom of the pool. In an effort to combat the algae growth, National Park Service workers dumped bottles of hydrogen peroxide into the water. Shortly after, the coating at the bottom of the pool began to peel.