I blame them all. Trump met with the entire FC and made concessions. It was not good enough. Why did this food fight have to happen in public? Trump was very personally involved in pushing the bill along with Pence, Price, Mulvaney, and others on his team. How did we ever get to the point that the bill had to be pulled at the last minute, a humiliating defeat for Trump that was celebrated by the Dems?
Exhibit A is Paul Ryan. Managing and whipping Legislation is the responsibility of House Leadership. Period.