if there was horsemeat. It is possible to vet suppliers more thoroughly, but it's cost prohibitive. I've done it with jet engine parts and there aren't many more things that sell for a high enough dollar to justify how much work that is.
But, so far we've only heard this from Czech authorities. There could be influence from native Czechs looking to use the authorities to give foreign products a black eye. Czechoslovakia's businessmen openly wield their influence in the government, they're even more obvious about it, as in old-school bribery and extortion, than the more roundabout versions the American corporatists go by.