It's not unheard of for journalists to reveal source identities if it's proven that that person badly misled a reporter or passed along bogus information. Some observers think that's what happened in the case of the Benghazi talking points.
Spitzer and Matalin debate if Benghazi will prove to be more Whitewater than Watergate. Is Toomey gutsy to chide the Right for opposing his bipartisan bill just to stymie Obama? Are tyrannical feds buying up ammo to undermine gun rights?
If the Bush administration would have at least acted like they might have done something wrong, maybe we could have moved on. But if Cheney is going on national TV to endorse torture, he has tied the hands of the country.