I did read Focus on the Family's Jim Daly's response in the Washington Post. I've excerpted a great quote here but go ahead and read the whole article. He does a terrific job of explaining his position in a well-thought out and calm manner.
But even an enthusiastic atheist would have a difficult time explaining how merely recognizing the first Thursday in May as a "Day of Prayer" (without any denominational attribution or financial support) is akin to establishing a national religion. By Judge Crabb's standards, if the federal recognition of the National Day of Prayer is illegal, so is Christmas Day and Easter Sunday.
Do any of you do anything special for the National Day of Prayer? Do your churches?