This link will take you to a petition urging Congress to Oppose Criminalizing Horse Meat. Follow the link to sign the petition and also easily send emails to President Obama and your representatives.
I have major concerns with the government regulating what people can or can not eat. The following quote from Thomas Jefferson sums up this view well:
“If people let government decide what foods they eat and what medicines they take, their bodies will soon be in as sorry a state as are the souls of those who live under tyranny.” –Thomas Jefferson