How is this non-dairy creamer really non-dairy when it has sodium caseinate?
Title 21 (Food and Drugs) of the Code of Federal Regulation states 


  "(d) When foods characterized on the label as "nondairy" contain a
  caseinate ingredient, the caseinate ingredient shall be followed by a
  parenthetical statement identifying its source. For example, if the
  manufacturer uses the term "nondairy" on a creamer that contains
  sodium caseinate, it shall include a parenthetical term such as "a
  milk derivative" after the listing of sodium caseinate in the
  ingredient list"


According to this page on the University of Nebraska-Lincoln's website, the term "non-dairy" is actually a by-product of the dairy lobby's efforts to make sure that substitute milk and cream products could not use the term dairy rather than the FDA trying to specify that something didn't contain any dairy.