Speaks volumes about the state of the USA given that y'all's regulations on food are so lax that the topic already tanked an agreement with the EU (TTIP) as well as a bilateral agreement with the UK (the one the Brexiteers proclaimed would be possible once Brexit came, but still isn't there).
The most obvious differences are washing eggs, washing chicken carcasses with chlorine and prophylactic (or worse, growth-stimulating) usage of antibiotics. All of that is banned here, but allowed in the US - mostly to mask the horrible sanitary and working conditions in farms and slaughterhouses. I'm not going to act like European slaughterhouses are paradises because they are everything but that, but nowhere near the levels of horror from the US.
When even regulation to prevent the worst of the worst isn't feasible any more, frankly I'd say your system has failed entirely.
Why wouldn't it be? In many ways they've clearly lost the fight. They're much smaller and less supported than the entities they intend to regulate. There is a known revolving door problem between federal and commercial employment. The natural mission of regulating food _and_ drugs is no longer sensible in our current social and political environment.