WASHINGTON – President Donald Trump will tell you: The grass is always greener on his side of the fence.And tell you. And tell you.Trump has spoken repeatedly of his prowess with green lawns since returning to the White House – at some events even spending more time talking about it than the war in Iran, the economy or November's midterm elections.It was on the president's mind just five weeks after his second inauguration, when he pointed out the Oval Office window during an interview with The Spectator. "You see the grass outside, right?" he asked before detailing his plans to…