From the New York Times:
On Friday evening, a somewhat shellshocked president retreated to the White House residence to grieve and assign blame. In a search for scapegoats, he asked his advisers repeatedly: Whose fault was this?
Increasingly, that blame has fallen on Reince Priebus, the White House chief of staff, who coordinated initial legislative strategy on the health care bill with Mr. Ryan, his close friend and a fellow Wisconsinite, according to three people briefed on the president’s recent discussions…
After it was all over, the president dutifully blamed the Democrats, a party out of power and largely leaderless, after turning his back on their offers to negotiate on a bipartisan package that would have addressed shortcomings in the Affordable Care Act while preserving its core protections for poor and working-class patients.