Why is it that when people speak the truth they are labeled as being Liberal? This did not happen in years past. It certainly did not get Ross Perot the liberal label. And when one speaks truth, the liberal label is used like a dirty word.
Facts are not liberal or conservative. Facts are things that can be measured and analyzed. They are not opinions. They do not have a bias.
This is even seen in copyright law. You can copyright the presentation of data, but you cannot copyright the data itself.
So, when the Neocons fling the Liberal Bias label to discredit facts, remember that facts are immutable. If it is subject to interpretation, it is likely not a fact, but an opinion.