You have no idea the pains I've gone to over the years to woodchuck-proof our front porch.  (I already mentioned how we gave up trying to grow vegetables.)  Anyway, here, captured on our woodchuck security camera at approximately 12:47 Sunday afternoon, is this gal.  I say gal, because those are leaves she's carrying in her mouth to make a nest under our porch.  Undeterred by the impervious barricade I have installed all around it, she simply started digging about six feet further away, under the hosta.  When she was out, I put chicken wire in the hole and one very large rock.  This will be a temporary fix, I'm sure, if history is any precedent.  I feel badly about it--I really do, but couldn't she find somewhere else to roost, like in a hedgerow like they do in storybooks?  If anyone has ANY SUGGESTIONS at all, please contact me here at Woodchuck Defense HQ.  Last year by the way, she dragged an entire plastic tablecloth off our table on the porch, leaving a trail of smashed clay flowerpots and little woodchuck footprints.  You gotta laugh.  If you can.