<<The clear implication is that the government would not allow the beef
from McDonald's to be fed to animals, but it does allow it to be fed to
humans.  This is, of course, utter nonsense, and no proof can or will be
forthcoming...>>

No, that was YOUR assumption AND misinterpretation.  THe gov't DOES allow
McDonald's to use what it uses.  Commercial grade is the grade fed to
animals.

S.