Premier consultancy McKinsey & Company is under investigation by the US Department of Justice for its past work advising opioid manufacturers on how to juice sales, The Wall Street Journal reported on Wednesday.The probe is also investigating whether the firm or its employees obstructed justice relating to record-keeping.McKinsey has long been under scrutiny for its yearslong work with various drugmakers, including Purdue Pharma. The consultancy has paid nearly $1 billion to all 50 states,... Read this story