Why is Steve Benen so worried about Obama being impeached?

Steve Benen thinks that, if Republicans re-take the House in November, they’re absolutely certain to impeach (but not convict) President Obama:

It’s tempting to think of impeachment as a far-fetched, silly idea, barring actual impeachable offenses. But the more I think about it, the more I remember this is the House Republican caucus we’re dealing with. They’re a creative bunch, with no real appreciation for norms or limits.

I wonder what Steve thinks Obama’s done? And I wonder if he’ll tell the rest of us anytime soon?

He knows there has to be a charge, right? I mean, he must. Obama has to break the law to be impeached. Do something like lie to a grand jury, just for instance. Steve? You knew that, right?

Via Memeorandum.