Most previous state standards failed to include math facts or the standard methods. Common Core requires both but teachers & textbooks might forget. Video "Arkansas mother, 'Karen Lamoreaux' obliterates Common Core" blamed CC for missing math facts. Should have asked!
If Chris or Dana did go to Russia for any reason, it may have been to investigate a possible connection Hillary Clinton had with missing Russian mail-order brides. Maybe Hillary "returned a few" but they disappeared en route. (Try Arkansas).