Ronald Kessler reporting from Washington, D.C. — Last June, President Obama appointed Vice President Joe Biden to root out wasteful government spending. But behind the scenes, it’s a different matter. Every Friday, Biden takes a helicopter designated as Marine Two from the vice president’s residence to Joint Base Andrews in Maryland and then hops on Air Force Two to fly back to his home in Delaware. At the end of the weekend, he returns on Air Force Two, usually a Boeing C-32. During warm weather, Biden regularly returns to Andrews on the airplane on Saturdays to play golf at the...