President Donald Trump has said the new Republican healthcare policy should be to allow the current law to collapse.
“I’m not going to own it,” Mr Trump told reporters of Obamacare, “I can tell you the Republicans are not going to own it.”
Support for the Republican Senate bill fell apart on Monday when two more senators said they could not back it.
Senate Democratic leader Chuck Schumer said Mr Trump was “playing a dangerous game” with the US healthcare system.
“He is actively, actively trying to undermine the healthcare system in this country using millions of Americans as political pawns in a cynical game”, Mr Schumer said on Tuesday.
Republican Senate leader Mitch McConnell said the chamber would vote early next week on a motion for repealing Obamacare only.
But with at least three Republicans against the plan B, it is probably doomed, too.