Senior Administration Official Says President Trump To Announce Deals With Nine Pharmaceutical Companies To Reduce Drug Prices; Deals Are With Amgen, Bristol Myers Squibb, Roche's GenenTech, Gilead, GSK, Merck, Novartis, Sanofi And Boehringer Ingelheim; Each Manufacturer Agrees To Reduce Prices On Majority Of Medications Sold Through Medicaid; Companies Commit To $150B In New Investment In Manufacturing And R&D In U.S.