Governors Aren't Allowed to Pray, Are They?

In the article linked here:

Secular Group to Protest Prayer for Rain

the Governor of Georgia wants to hold a service to pray for relief from the drought. He is being sued by the Atlanta Freethought Society to prevent this.

In the original AP story they mention that many past presidents have prayed and even supported a National Day of Prayer and Fasting. They mention that Jefferson was an exception. What they don't mention is that Jefferson did not recommend such a thing because he believe the Federal Government should not do this (remember that the Founders were very cautious of a too-strong Federal Government). HOWEVER, later Jefferson did recommend a Day of Prayer and Fasting as Governor of Virginia. He thought that was the proper level at which to do it.