Trump tries explain why the Reflecting Pool is algae green and its blue lining is peeling. Police arrest a former Olympic canoe racer on a bike ride

President Donald Trump on Saturday announced that federal authorities had made “multiple arrests” of people he said were vandalizing the Reflecting Pool as he struggled to explain why the $14-million-plus rehabilitation project he launched for the nation’s 250th anniversary seemingly backfired. Trump said his predecessors had let the pool turn an algae-stained green and that he’d line it with “American flag blue” so it better reflected the Washington Monument. But after the new pool was unveiled, its blue tinge quickly became a familiar green. Workers treated it with chemicals to kill the algae, but then the painted blue lining on the bottom began to peel. On Friday night, Trump posted about the pool. “We’ve had some real problems with Vandalism at the beautiful Reflecting Pool,” he posted on his social media site Friday night. “Just like three days ago, they destroyed the grass outside of the Pool, they’ve also done everything possible to hurt the inside surface that was just installed.” He offered no details to substantiate his claim. Agencies responsible for law enforcement and upkeep on the National Mall — the U.S. Park Police, National Park Service and Interior Department — did not respond to requests for comment. Trump on Saturday followed up by posting that Park Police “have arrested multiple individuals for vandalizing our Nations magnificent Reflecting Poll,” correcting his spelling to “Pool” later. He went on: “Who would do such a thing? These are very serious crimes having to do with the destruction of National Monuments. Years in jail!” One man arrested was David Hearn, 67, of Bethesda, Maryland, who owned a company that made composite used to build watercraft. He said he stopped by the pool during his 64-mile bike ride Friday to see what was going on. Hearn, a former Olympic canoe racer, told The Associated Press that he reached into the pool because he wanted to examine the peeling new coating. He said he briefly tou