about ten years ago a particular brand of milk marketed in New England lost its hechsher because it added a non-kosher additive.
Can you elaborate?
If it is possible, and obviously legal, to include a non-kosher additive in American milk, how can anyone rely on the original heter for CS which at the time it was issued was based on the assumption that all American milk must be kosher based solely upon USDA regulations and enforcement.