In 2009, Congress recognized Pi Day, but Pi didn’t always have favor among law makers:

On February 5, 1897, the state of Indiana almost declared pi as “5/4 to 4” or 3.2. While it�s fairly common for governmental bodies to legislate weights and measures, this shows that the Indiana Legislature doesn�t understand the concept of irrational numbers. It�s the irrational part that makes pi so great, in the first place.

We learned of this odd legal error from the �squaring-the-circle dept.� at Slashdot, and Wired Magazine has the full story.