Pigs are to Pork as Horses are to... Horse Meat?

I read this article earlier today about how the law would soon allow the slaughter of horses for meat.  (Horse meat is an interest of mine. It's normal. Thanks for asking.)  Anyways, the last line of the second paragraph struck me as a little odd:

Congress lifted the ban [on slaughtering horses for meat] in a spending bill President Barack Obama signed into law Nov. 18 to keep the government afloat until mid-December.

I'm pretty sure there's something in The Constitution that protects our god-given right to slaughter horses but still, I am happy that Congress reaffirmed that right in a subtle, efficient and not at all weird way. Way to go, government.