Patrols and nanobubbles on display at the Reflecting Pool as Trump looks for a renovation do-over

President Donald Trump's administration faces issues with a botched $14 million-plus renovation of the Lincoln Memorial Reflecting Pool, which developed an algae bloom and damaged coating. Trump attributes the problems to vandalism, including fertilizer dumping and deliberate cuts, while contractors use chemicals and nanobubbles to address the algae. National Guard and U.S. Park Police patrols are now monitoring the site.