The Republican-led Ending Agricultural Trade Suppression, or Eats, Act aims to end the authority of states and localities to set animal welfare and food safety standards. If passed, it could also jeopardize more than 1,000 state and local health and safety laws that set food-quality requirements and stop the spread of invasive species and zoonotic diseases like avian flu.
Why are they so dead set on doing evil?
Because it costs less. Treating animals like they do/did/want to requires less labor and less overhead costs so higher profits.