With the bunch of crooks currently infesting the place, I'd briefly considered something along the lines of a Weighted Alpha Strike or carpet bombing...but no. 'Way too many broken windows, and I'd seriously miss the Air and Space Museum, Arlington and all of the monuments.
One possibility would be to leave a trail of Billion-dollar bills (not released yet, but with The 0, Holder and Dingy Harry as featured artwork) out to a really big party boat which,after all the slugs get on board, could be towed out to sea about 40 miles and then scuttled. Or maybe blown up, since that Chicago sh** probably doesn't sink even yet.
...might have to get a waiver on that from the Treehuggers and PETA, though. Somebody's bound to complain about how that would constitute gross cruelty to sharks. Saw pictures of one that ate Louisiana license plates and some beer bottles once, though, so I will remain optimistic.
Uh..... Ok!