Federal judge rules National Day of Prayer unconstitutional

A federal judge in Wisconsin says that the National Day of Prayer is unconstitutional and thus illegal, according to evangelist Franklin Graham.

This is how U.S. District Judge Barbara Crabb reaches her conclusion as she writes:

“The nature of prayer is so personal and can have such a powerful effect on a community that the government may not use its authority to try to influence an individual’s decision whether and when to pray.”

Doesn't her logic make a case for having it? 

Here are links to the decision and background about the case from the University of Pittsburgh School of Law.