Bloomberg’s Stephen Dennis, congressional reporter, and Zach Tracer, health care reporter, on the Senate’s failure to repeal Obamacare, as McCain blocks bill. Anna Edney, health care reporter for Bloomberg, on FDA looking to cut cigarette nicotine, in a blow to the tobacco industry. David Garrity, CEO of GVA Research and columnist at Investopedia, on Amazon disappointing, this week’s tech earnings highlights, and outlook for the sector. Liam Denning, Bloomberg Gadfly columnist covering energy, on oil markets and earnings: Exxon, Chevron.