Utter nonsense. All I see in the paper is the liberal/left attacking the judeo-christian values that founded this nation.
You must be reading a very issue specific paper because when I read the Chicago Tribune I see plenty of other newsworthy topics aside from the so-called war on christianity.
Also, just because the country was founded on certain values does not mean they were good values to begin with. Women weren't allowed to vote, slavery was legal, and the natives of this land were forced from their homes by conquering white guys who only cared about their own freedom without regard to others. Those judeo-christian valued you mentioned were also the basis for events like the Salem Witch Trails as well as the slaughter of the "savages" that wouldn't comform to the Puritan ideals.
Wasn't the whole point of the whole "freedom of religion" bit in the first ammendment to keep the government from imposing a state sponsored religion on people? Christmas is a federal holiday, liquor laws that prohibit drinking on Sundays are derived directly from the (misunderstood) idea of the sabbath, and the Ten Commandments don't belong in a school because the very first one demands acceptance of that religion.
While many of the attacks on christianity are undeserved and overblown, many of the attacks are well justified because the conservative right is trying to impose its' own religious values on people who have the same protection from a state sponsored religion as you have protection from illegal search and seizure.