That's a major problem on the market right now. No one is taking care that the same rules apply to everyone.
My first job out of graduate school was testing imported products at Health Canada for antimicrobial resistance. A shocking number of products coming into Canada had antimicrobial resistance in the products.
Research similar to what I'm doing is being done in different areas internationally, but it is a patchwork. Some countries, like the Nordic countries, care very much about antimicrobial resistance. They have stronger laws than Canada does on their farms for antibiotics. Some countries have much more relaxed laws and use a lot more antibiotics in their farming than Canada does.