A senior Republican said that US President Donald Trump has pledged himself to defeat the Islamic State (IS) in Syria despite his decision to withdraw US troops.
Senator Lindsey Graham said he was now convinced after meeting him at the meeting Sunday.
The retreat plan of Trump's forces met with fierce criticism from large ally and senior Republicans like Graham.
The President and the White House have not yet commented on any formal plan changes.
On December 1
Critics of the plan deny this claim, arguing that the move could lead to a resurgence of ISIS, which could affect national security.
US troops have helped free Syria's northeast from the jihadist group, but there are still fighters left.
Since the decision, two persons have resigned since the resolution was announced – Defense Secretary Jim Mattis and a top American officer fighting IS, Brett McGurk.
What did President Senator Graham say?
Lindsey Graham, who previously described the resignation decision as a "major Obama-like mistake," told reporters: "The President assured him he was
"He promised to destroy Isis and he will keep that promise."
"I think we're slowing things down a bit," said the South Carolina senator.
Indicated that Mr. Trump, or delaying the withdrawal of US troops, Graham said, "I think we are in a pause, re-evaluating how the president can achieve the goal of people paying more and doing more."
Jonathan Marcus of the BBC suggested that Mr. Trump seemingly washes the hands of the Middle East and hands over the entire task to Russia, Turkey and Iran.
Later, he expressed concern in CNN that the US withdrawal would expose "our Kurdish allies, in northern Syria, to attacks by Turkey."
"If we leave now, the Kurds will be slaughtered," he said. "The President is considering how we are doing that. He's frustrated, I understand that.
What is the US Presence in Syria?
The US ground forces were involved in the fall of 2015 for the first time in Syria, when then-President Barack Obama advised a small number of special units to train and deploy local Kurdish fighters who fought against IS
The US reluctantly did so after several attempts to bring anti-IS groups into chaos had plunged chaos.
Over the years, numbers increased US troops in Syria today reach about 2,000, though some estimates may even increase that number.
A network of bases and runways was built in an arch over the northeast of the country.
The US was also part of it an international group coalition in air strikes against IS and other militants.