Alright, so CBS won’t admit to its blindingly obvious political bias. That’s not surprising. But here’s a challenge. Since the mainstream media won’t fess up to its political bias–even in a case this egregious–how would we actually know if, or when, the media stopped being biased? After all, the media can’t openly claim credit for getting rid of a bias they haven’t acknowledged to begin with. So we need to create a measure that will tell us when unacknowledged media bias actually goes away. To solve this problem, I’ve devised a simple test that will indicate with objective certainty the moment when the media’s liberal bias finally disappears. Notice that Tuesday’s Washington Post featured an analysis of the Rather report co-written by Howard Kurtz and Dana Milbank. Milbank used to write for The New Republic, a liberal political magazine. It’s common for mainstream outlets to hire reporters from liberal magazines (but not from conservative magazines, of course). And the Rather report will either be discussed (or meaningfully ignored) this Sunday on ABC’s This Week, hosted by President Clinton’s former chief political advisor, George Stephanopoulos. So when in the future we find that 60 Minutes has put out a bogus report threatening the chances of a Democratic presidential nominee at the height of an election, and when that story is analyzed in The Washington Post in an article co-written by Howard Kurtz and Ramesh Ponnuru. And when the story is either discussed (or meaningfully ignored) on ABC’s This Week, hosted by Karl Rove, then we will know that the mainstream media no longer has a liberal bias.