מדינתנו = USA.
'זה שאם יערבו יענשו ויצטרכו לסגור העסק שלהם שהוא הרוחה של כמה אלפים והממשלה משגחת אליה,
That is your interpretation, without firm proof, or even indication, from the Teshuvah.
Anyone could just as easily, or perhaps more easily, (and in fact they do,) apply this to any first-world country with robust laws etc, such as Canada, Australia, New Zealand to name a few, even though there are bound to be subtle differences with regards to "greater fear of the law".
In any case, I think anyone who thinks that Americans in 2013 have a "greater fear of the law" than other (first-world) countries around the world has their head in the sand.
By cholov yisroel, even according to the most stringent poskim, we do no't require absolute knowledge. Absolute knowledge would be impossible without the consumer himself witnessing it.
The conumer does not need to witness it himself, but he needs to know that a Yid witnessed it himself.
There may be certain
Umdanos which Shulchan Oruch and Nosei Keilim say are so powerful that it is as if a Yid saw it, but this particular Hetter does approach that level, which is why all noteworthy Poskim of the past generation rejected this Hetter, besides for Reb Moshe and his family/students.
As I mentioned earlier in this discussion, my point is not to attack Reb Moshe's Hetter from those who follow it, נהרא נהרא ופשטיה.
I do have a MAJOR problem with those who "market" Reb Moshe's Hetter as "normative" Yiddishkeit, and Cholov Yisroel as some Super-Mega-Chumra-Hiddur meant for Prushim and the like.
Au Contraire the level of beriur is actually less for meat than cholov yisroel, because of said takana. The reason it would be unreliable is because shecita is more complicated than milking a cow.
I hear you, but that is not true.
Part of the reason (or probably most of the reason) that people would not trust the butcher is not just because of the standard of the Shchittah, but because of a doubt whether it was shechted at all.