House Speaker Nancy Pelosi Nancy PelosiDemocratic senator to party: 'A little message discipline wouldn't kill us' Overnight Health Care: New wave of COVID-19 cases builds in US | Florida to lift all coronavirus restrictions on restaurants, bars | Trump stirs questions with 0 drug coupon plan Overnight Defense: Appeals court revives House lawsuit against military funding for border wall | Dems push for limits on transferring military gear to police | Lawmakers ask for IG probe into Pentagon's use of COVID-19 funds MORE (D-Calif.) warned that proposed cuts to foreign aid already appropriated by Congress could put a budget deal with the White House in jeopardy in a Sunday letter to Treasury Secretary Steven Mnuchin Steven Terner MnuchinThe Hill's Morning Report - Sponsored by Facebook - Republicans lawmakers rebuke Trump on election On The Money: Anxious Democrats push for vote on COVID-19 aid | Pelosi, Mnuchin ready to restart talks | Weekly jobless claims increase | Senate treads close to shutdown deadline Vulnerable Democrats tell Pelosi COVID-19 compromise 'essential' MORE.

“I request that you work within the Administration to stop this proposed rescission, which GAO [Government Accountability Office] states is illegal, which violates the good faith of our budget negotiations, which important Republicans say is ill-advised, and which overrides Congress’ most fundamental Constitutional power,” Pelosi wrote in the letter to Mnuchin.

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Pelosi enclosed a letter from Sen. Lindsey Graham Lindsey Olin GrahamLincoln Project mocks Lindsey Graham's fundraising lag with Sarah McLachlan-themed video The Hill's Morning Report - Sponsored by Facebook - Republicans lawmakers rebuke Trump on election Trump dumbfounds GOP with latest unforced error MORE (R-S.C.) and Rep. Hal Rogers Harold (Hal) Dallas RogersHouse Democrats push for resuming aid to Palestinians in spending bill House panel approves bill funding WHO, paring back abortion restrictions Democrats take aim at Trump's policies on 2021 funding markups MORE (R-Ky.), the former chairman of the House Appropriations Committee, expressing their own concerns about the proposed $4.3 billion in cuts to State Department and United States Agency for International Development funding.

The Speaker also included a bipartisan letter warning against a new rescission package signed by House Foreign Affairs Committee Chairman Eliot Engel Eliot Lance EngelHouse panel halts contempt proceedings against Pompeo after documents turned over Engel subpoenas US global media chief Michael Pack The Hill's Morning Report - Sponsored by The Air Line Pilots Association - Pence lauds Harris as 'experienced debater'; Trump, Biden diverge over debate prep MORE (D-N.Y.) and ranking member Michael McCaul Michael Thomas McCaulHouse passes legislation to crack down on business with companies that utilize China's forced labor House Republicans blame Chinese cover-up for coronavirus pandemic Engel subpoenas US global media chief Michael Pack MORE (D-Texas) and Senate Foreign Relations Committee Chairman Jim Risch (R-Idaho) and ranking member Bob Menendez (D-N.J.)

"A move to rescind funding absent policy input from the Department of State and USAID [U.S. Agency for International Development] only undermines our national security interests and emboldens our adversaries,” Rogers and Graham wrote. “We strongly urge you to reconsider this approach.”

Other members of the Appropriations Committee also warned against the attempted rescission Friday.

“The Trump administration’s continued efforts to illegally withhold funding that Congress has approved subverts critical norms in our democratic process," Appropriations Committee Chairwoman Nita Lowey Nita Sue LoweyTop House Democrats call for watchdog probe into Pompeo's Jerusalem speech With Biden, advocates sense momentum for lifting abortion funding ban Progressives look to flex their muscle in next Congress after primary wins MORE (D-N.Y.) said in a statement to The Hill on Friday.

"We are insisting that the administration spend the appropriated foreign assistance funds, and are working with GAO to make sure the law is followed," she added.