Senate Republican leaders had set Friday as the target for rewriting legislation for a simultaneous repeal and replacement of extensive parts of the 2010 Affordable Care Act, the law dubbed Obamacare that expanded health insurance coverage to 20 million people, Reuters reported.
The deadline was not met given that most senators had left Washington ahead of next week's recess, without agreement on a clear direction for the healthcare bill.
Trump wrote on Twitter Friday morning, "If Republican Senators are unable to pass what they are working on now, they should immediately REPEAL, and then REPLACE at a later date!"
The White House said later that Trump was still "fully committed" to pushing the Republican draft healthcare bill through the Senate, although it was looking at every option for repealing and replacing Obamacare.
"The president hasn't changed his thinking at all," White House spokeswoman Sarah Sanders told reporters.
The current Senate legislation would repeal parts of Obamacare, roll back its expansion of the Medicaid government healthcare program for the poor, eliminate most of Obamacare's taxes and replace Obamacare insurance subsidies with a system of tax credits to help individuals buy private health insurance.
Conservative and moderate Republicans have spent recent days pushing and pulling the bill in opposite directions as Senate Majority leader Mitch McConnell sought common ground. Moderates want more equity for low-income Americans, while conservatives are fighting to loosen insurance regulations.
Shortly before his January inauguration, Trump urged lawmakers to repeal and replace Obamacare at the same time. Congressional Republicans had considered earlier this year first repealing, then replacing Obamacare, but backed away after some lawmakers protested that that approach could create a gap in insurance coverage for millions.
On Friday, Republican Senator Ben Sasse who had suggested that Congress first repeal Obamacare and then replace it, tweeted: "Glad you agree, Mr. Pres." Conservative Senator Rand Paul also backed the idea.
But others on Capitol Hill sounded annoyed. A senior Senate Republican aide, speaking on condition of anonymity, said that if lawmakers had been able to get the votes for repealing Obamacare first, then replacing it, "senators would have done that in January. It doesn't have the votes, and it's a waste of valuable time to discuss it."
Annie Clark, a spokeswoman for moderate Republican Senator Susan Collins, said the lawmaker would not support the strategy. McConnell's spokesman declined to comment on Trump's tweet.