Aetna  signage displayed outside of the company’s corporate headquarters in Hartford, Connecticut. Photographer: Ron Antonelli/Bloomberg

Aetna has agreed to buy rival health insurer Humana paying about $35 billion in cash and stock for the second-largest US provider of private health pl(...)

US doctors and teaching hospitals got $6.49 billion from drug and medical-device makers in 2014, according to new government data .

US doctors and teaching hospitals got $6.49 billion from drug and medical-device makers in 2014, according to new government data on the financial lin(...)

A protester flashes a victory sign behind a Greek flag in front of the parliament building, during an anti-austerity rally in Athens, Greece. Photograph: Yannis Behrakis/Reuters 3:02

Prime Minister Alexis Tsipras has urged Greeks to reject the terms of an international aid deal in a July 5th referendum, dismissing warnings that a ‘(...)

President Barack Obama: ‘This law is now helping tens of millions of Americans.’ Photograph: AP Photo/Pablo Martinez Monsivais

For years, US president Barack Obama has faced the sneers of political adversaries who called his health care law Obamacare and assailed his effort to(...)

“Personality-based political analysis is always a dubious venture - in my experience, pundits are terrible judges of character.” Photograph: Spencer Platt/Getty Images.

So Hillary Clinton is officially running, to nobody’s surprise. And you know what’s coming: endless attempts to psychoanalyse the candidate, endles(...)

The only people hurt by health reform are Americans with very high incomes, who have seen their taxes go up, and a  small number of people who have seen their premiums rise because they’re young, healthy and affluent

There’s a lot of fuzzy maths in American politics, but Representative Pete Sessions of Texas, the chairman of the House Rules Committee, recently set (...)

Roads taken: Denis Sampson

I became a Canadian father long before I settled in Montreal or realised I was creating a new home. My wife and I, both young, had assumed we would(...)

 Barack Obama: it goes without saying the president’s fiscal proposals will be attacked by Republicans. Photograph: John Gress/Reuters

By the time you read this President Barack Obama will have called for a significant increase in spending, reversing the harsh cuts of the past few yea(...)

 In the first State of the Union address after the September 2001 attacks on the US, President George W  Bush branded Iraq, Iran and North Korea as “an axis of evil”, adding that “by seeking weapons of mass destruction, these regimes pose a grave and growing danger”. These words later haunted Republicans after Bush was found to have invaded Iraq on a false premise. File photograph:  Win McNamee/Reuters 2:12

The annual State of the Union speech to the joint session of Congress gives the US president an opportunity to underscore past policy achievements and(...)

CVS Health, the second-largest pharmacy benefits manager in the US, said that it would make Gilead’s drugs, Harvoni and Sovaldi (above), the exclusive option for patients on its commercial drug list.

Gilead Sciences has struck back against its rival AbbVie in a budding marketing war in the United States over costly hepatitis C drugs, winning exc(...)