Momenta Pharmaceuticals, Inc. (MNTA)

[jbog]

has the FDA ever in fact, approved a product produced in a facility receiving a warning letter.

As of my knowledge the answer is no. But this punishment or policy, which ever way we view it, is relatively new.

In my view people are dreaming if they feel the FDA would skirt this policy.

You have a better chance hoping that the FDA may change their policy.