The 2020 Democratic presidential contender said she wants to stop politicians from “fighting in these wasteful regime-change wars."
Roughly 7,000 Syrians will retain legal status in the U.S. for another 18 months.
The State Department said Washington would "respond quickly and appropriately" if Assad was found to have launched a chemical weapon attack.
The figure is hundreds more than the number the U.S.-led coalition claims over the entire four-year campaign against IS, the groups said.
The democratic presidential hopeful said the Syrian ruler should be held accountable "if the evidence is there" on chemical weapons.
The congresswoman and Democratic presidential contender was engaged in a tense discussion on "Morning Joe."
Syrian President Bashar al-Assad's government is liable for $302.5 million in damages, a judge ruled.
Mattis reportedly told an aide, "We’re not going to do any of that."
President Donald Trump and other leaders requested that the rescue workers be evacuated.
The state's fourth-largest union had backed the Democratic congresswoman two years ago.
The six-term senator is back home after his latest surgery.
The former congressman is seeking the Democratic nomination in Ohio's gubernatorial race and recently revealed he accepted $20,000 from a pro-Assad group.
Nikki Haley had said that Washington was preparing new sanctions over Russia's support of Syrian President Bashar al-Assad.
And potentially vulnerable to Russian blackmail, the former FBI director said.
“Could not have had a better result,” said President Donald Trump. “Mission Accomplished!”
As some 40,000 residents fled, Russian military police were deployed in the town.
Trump ordered military strikes on Syria in response to the attack.
Republican and Democratic lawmakers say the president must go through them before taking any military action.