In 2004, Congress passed a resolution declaring December 13th as National Day of the Horse. The designation was made to commemorate the massive contribution horses have given to the economy, history and character of the United States. The resolution:
1. encourages all citizens to be mindful of the contribution of horses to the economy, history, and character of the United States;
2. expresses its sense that a National Day of the Horse should be established in recognition of the importance of horses to the Nation's security, economy, recreation, and heritage; and
3. urges the President to issue a proclamation calling on the people of the United States and interested organizations to observe National Day of the Horse with appropriate programs and activities.
Read full Resolution: http://www.govtrack.us/congress/bills/108/sres452