Mother Nature is interfering with one of the US president’s pet projects just days after it was repainted.

The Department of the Interior said the algae bloom turning the pool green was being “vacuumed up as we speak.”

Algal blooms have hit the site, between the Lincoln Memorial and the Washington Monument, after a $14.2 million repair project.

Swamp Thing: Algae mess with Trump's pool project

Not just aesthetically but biologically