Horses could soon be butchered in the U.S. for human consumption after Congress quietly lifted a 5-year-old ban on funding horse meat inspections, and activists say slaughterhouses could be up and running in as little as a month.

Slaughter opponents pushed a measure cutting off funding for horse meat inspections through Congress in 2006 after other efforts to pass outright bans on horse slaughter failed in previous years. Congress lifted the ban in a spending bill President Barack Obama signed into law Nov. 18 to keep the government afloat until mid-December.

It did not, however, allocate any new money to pay for horse meat inspections, which opponents claim could cost taxpayers $3 million to $5 million a year. The U.S. Department of Agriculture would have to find the money in its existing budget, which is expected to see more cuts this year as Congress and the White House aim to trim federal spending.