Remember when the children of public figures were off-limits in the day-to-day hand-to-hand combat of political warfare?

It's a rule that didn't just applied to the underage children of politicians, but the adult children. Witness the 2008 suspension of MSNBC's David Shuster for suggesting then-presidential contender Hillary Clinton's 28-year-old daughter Chelsea Clinton was being "pimped out" by the campaign.

But maybe that rule only applied to Democrats. When it comes to liberal pundits attempting to score cheap points against conservatives, especially ones they loathe like Rep. Michele Bachmann, R-Minn, all bets are off. In an Aug. 12 column, Minneapolis Star Tribune columnist Jon Tevlin, citing a hateful anti-Bachmann blog, decided it appropriate to beat up the two-term congresswoman using her son Harrison's decision to participate in the government program Teach for America (TFA). TFA is one of the programs under the AmeriCorps umbrella.