"We will not fund states that allow anarchy," she told reporters.
The federal government remains closed amid a bitter impasse on Capitol Hill over competing congressional spending bills.
President Donald Trump and Republicans have cast blame for the shutdown on Democrats' health care demands, while Democrats insist Republicans need to negotiate.
The Trump administration has threatened mass layoffs of some federal workers during the shutdown.
After holding a bilateral meeting with Israeli Prime Minister Benjamin Netanyahu, President Donald Trump said this is "potentially one of the great days ever in civilization."
Trump said he and Netanyahu have "worked well together" and that the prime minister has "agreed" to the president's 20-point plan to end the war in Gaza.
Before President Donald Trump and Israeli Prime Minister Benjamin Netanyahu held a press conference following their bilateral meeting, the White House released Trump's "Comprehensive Plan to End the Gaza Conflict."
Some of the 20 points included in the plan state that Gaza "will be a deradicalized terror-free zone that does not pose a threat to its neighbors" and that Gaza will be "redeveloped for the benefit of the people of Gaza, who have suffered more than enough."
The plan also states that if both sides agree to this proposal, "the war will immediately end."
Within 72 hours of Israel publicly accepting this agreement, "all hostages, alive and deceased, will be returned," the plan states."
President Donald Trump welcomed Israeli Prime Minister Benjamin Netanyahu to the White House on Monday, where the two will discuss the ongoing war in the Gaza Strip.
While standing next to Netanyahu, Trump told reporters he is "very confident" there will soon be peace in Gaza.
The two leaders shook hands and waved to cameras before walking into the White House.
Before President Donald Trump meets with bipartisan congressional leadership on Monday to avert a possible government shutdown, House Minority Leader Hakeem Jeffries said Democrats are "determined to turn things around" and that their position "will continue to be clear."
He told reporters Democrats are heading into the meeting to have a "good faith negotiation" about "landing the plane that avoids a government shutdown, but does not continue the Republican assault on the health care of the American people."
One of the main points of contention between Republicans and Democrats is the impending expiration of some of the Affordable Care Act's tax credits, which Democrats are fighting to extend.
Jeffries said he will see whether Trump is "interested in protecting the health care of the American people."
"Enough with the games that Republicans have been playing. No one can trust their word on health care," Jeffries said.
