the two are not unrelated. if it were purely about the money, they EU wouldn't enact any animal welfare and environmental regulations - but they do. of course they have to protect their markets now, but the question is whether the U.S. model is sustainable. china, for example, is outsourcing its pork production to the U.S. because it's deemed too toxic.
Ethical doesn't have to mean non-functional. Like I previously highlighted the "mad cow" disease pandemic of the 90s shows that these "soft" ideas of not feeding cows beef scraps actually have functional outcomes, despite seeming ethnical at first. This is also evidenced by free-range chickens having less potential exposure to bird flu than hatchery chickens who are packed so close together that the virus can sweep through the entire facility.
You're joking right? There's only one reason we have those tarriffs and that's: money. To protect our own EU market.