For those of you who are historically illiterate...and believe that our early leaders wanted a secular society without God...take a look at Abraham Lincoln's acknowlegment of God Almighty and His blessing throughout his proclamation...
Proclamation of Thanksgiving
October 3, 1863
This is the proclamation which set the precedent for America's national day of Thanksgiving. During his administration, President Lincoln issued many orders similar to this. For example, on November 28, 1861, he ordered government departments closed for a local day of thanksgiving.