That's the double edged sword. Requiring labeling doesn't prevent label fraud, and pretending label fraud is rare is either naive or obtuse.
Oversight is then called for (eg USDA organic) which itself can still be frauded around, especially when dealing with sources outside of the US.
I'm reminded of a tiktok that had raw chicken labeled with a particular weight at Walmart. When they weighed it on a checkout scale, it didn't match the weight the label had. On multiple packages.
So basically, vague "it is impossible to make inspections"?