Anger among conservative lawmakers boiled over Tuesday in the wake of a budget deal that will add hundreds of billions of dollars to the national debt, posing a challenge for GOP leaders.

The package is expected to pass Congress now that President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE has blessed the agreement, but GOP leaders are being tested as they try to count votes amid conservative unrest about the spending agreement’s $320 billion price tag.

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“There are always Republicans who are going to say, ‘We think it might spend more here than we would have liked,’ but this is a divided government,” said Sen. John Thune John Randolph ThuneSenate passes resolution reaffirming commitment to peaceful transition of power Susan Collins faces political land mine with Supreme Court fight Abortion stirs GOP tensions in Supreme Court fight MORE (S.D.), the No. 2 Senate Republican. “It probably won’t get all of our members, but I think it will get a lot of them.”

Congressional leaders are racing to get the bill to Trump’s desk before lawmakers leave town for the August recess. The House Rules Committee is slated to take up the measure Wednesday, paving the way for a floor vote this week.

The Senate is expected to take action the following week.

Top Republicans projected confidence Tuesday about the deal’s prospects, even amid pushback from the edges of both parties, as some progressives have complained about the high level of defense spending.

Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellTrump 'no longer angry' at Romney because of Supreme Court stance 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 The Hill's Campaign Report: Trump faces backlash after not committing to peaceful transition of power MORE (R-Ky.) defended the agreement, saying he makes “no apologies” for pushing for a two-year agreement and that he is “confident” it will pass the Senate.

“I make no apologies for this two-year caps deal. I think it’s the best we could have done in a timely divided government. The alternatives were much worse, a one-year CR, a sequester, perpetual chaos,” he said, referring to a continuing resolution.

Treasury Secretary Steven Mnuchin Steven Terner MnuchinOn 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' Pelosi asks panels to draft new COVID-19 relief measure MORE, the lead White House negotiator who discussed the deal with senators during a closed-door lunch on Tuesday, told reporters that Trump “absolutely” supports the deal and that he is “sure it will pass.”

“I just explained why this was a fairly negotiated deal. It’s important that we have bipartisan support,” he said when asked what his pitch to Republicans was.

But conservatives and budget hawks are airing their grievances about the higher spending and lack of cuts to help pay for the legislation.

“Most members are struggling to see any silver lining in the proposed budget,” said one member of the conservative House Freedom Caucus. “President Trump will have set the record for the largest increases in federal spending in the history of our country, surpassing George W. Bush’s Republican record.”

Rep. Andy Biggs (R-Ariz.), another Freedom Caucus member, characterized himself as “really not thrilled” with the deal, adding that he is likely to vote against it.

“I don’t see the prohibition on Planned Parenthood funding in there. I don’t know that ICE [Immigration and Customs Enforcement] and our border issues are adequately funded. My default position in that case, since you’re going to be adding a whole bunch of money to the deficit and the national debt, would be to vote ‘no,’ ” Biggs said in an interview with The Hill.

A spokesman for the Freedom Caucus announced on Tuesday night that the group would formally oppose the budget deal.

The House can pass the budget deal without votes from Freedom Caucus members, if most Democrats and other Republicans vote for it, but lawmakers in the conservative group often have the ear of Trump and could try to persuade him not to sign it.

In December, conservative lawmakers and commentators convinced Trump to not sign a Senate-passed stopgap spending bill, which paved the way for a 35-day partial government shutdown.

GOP “no” votes are also lining up in the Senate, including Sens. Ron Johnson Ronald (Ron) Harold JohnsonThe Hill's Morning Report - Sponsored by Facebook - Trump previews SCOTUS nominee as 'totally brilliant' The Hill's 12:30 Report: Ginsburg lies in repose CHC leaders urge Senate to oppose Chad Wolf nomination MORE (Wis.), Mike Braun Michael BraunPessimism grows as hopes fade for coronavirus deal McConnell shores up GOP support for coronavirus package Patient Protection Pledge offers price transparency MORE (Ind.) and Mike Lee Michael (Mike) Shumway LeeBipartisan representatives demand answers on expired surveillance programs McConnell shores up GOP support for coronavirus package McConnell tries to unify GOP MORE (Utah), while others are calling for a return to the negotiating table.

“We should work to restore fiscal sanity, rather than perpetuating Democrats’ big government programs. I urge administration negotiators to go back to the bargaining table and fight for the president’s priorities,” Sen. Ted Cruz Rafael (Ted) Edward CruzThe Hill's Morning Report - Sponsored by Facebook - Trump previews SCOTUS nominee as 'totally brilliant' Cruz blocks amended resolution honoring Ginsburg over language about her dying wish Trump argues full Supreme Court needed to settle potential election disputes MORE (R-Texas) said in a statement.

Johnson said he was “highly disappointed” and was an adamant “no” vote against the budget deal.

“Highly disappointed that as part of that deal we don’t have a structural reform. That’s what I’ve always asked for,” he said. “I told the leader that a couple weeks ago. I said, ‘If you want me to support any kind of increase in the debt ceiling, we need a structural reform.’ ”

Some GOP senators predicted that “several” of their colleagues had concerns or would ultimately vote against the agreement. They characterized themselves as weighing how to vote or wanting to see more details, suggesting GOP opposition could increase.

“I’m not convinced on the deal yet and I think there are a number of folks who aren’t convinced yet,” said Sen. John Kennedy John Neely KennedyMORE (R-La.).

Asked what Mnuchin’s message was to Republicans during the closed-door lunch, Kennedy characterized it as “yippy yippy yay, I made a deal” and that the GOP meeting was a “rah-rah session.”

When acting Office of Management and Budget Director Russell Vought was asked on Fox News on Tuesday what he would say to lawmakers who may vote against the deal, he noted that Trump has proposed spending cuts in the past and that the budget deal prevents there from being any new riders in appropriations bills.

“There will be no new legislative riders to stop this president’s agenda on deregulatory initiatives or building the wall,” he said.

When asked about the concerns from deficit hawks, Mnuchin painted the agreement as a product of compromises from both sides.

“We needed a debt ceiling increase,” he told reporters. “And again we couldn’t get a deal without having bipartisan support.”

But some conservative lawmakers indicated that it would be hard for them to be persuaded by the White House.

“I think the president sees it as bill with no poison pills, but a spending level that puts the country on a path to bankruptcy is a poison pill,” Rep. Warren Davidson Warren Earl DavidsonHillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns Bipartisan representatives demand answers on expired surveillance programs GOP-Trump fractures on masks open up MORE (R-Ohio), a Freedom Caucus member, told The Hill. “It’s not compassionate to bankrupt the country.”

House Minority Leader Kevin McCarthy Kevin Owen McCarthyMcCarthy says there will be a peaceful transition if Biden wins GOP lawmakers distance themselves from Trump comments on transfer of power McCarthy claims protests in Louisville, other cities are 'planned, orchestrated events' MORE (R-Calif.) and Minority Whip Steve Scalise Stephen (Steve) Joseph ScaliseHouse GOP slated to unveil agenda ahead of election House panel details 'serious' concerns around Florida, Georgia, Texas, Wisconsin elections Scalise hit with ethics complaint over doctored Barkan video MORE (R-La.) are backing the deal, and Scalise’s office said he would be whipping GOP members in favor of the bill.

One member of House GOP leadership, Rep. Mark Walker Bradley (Mark) Mark WalkerJoe Biden has long forgotten North Carolina: Today's visit is too late Mike Johnson to run for vice chairman of House GOP conference The Hill's Morning Report - Sponsored by National Industries for the Blind - Woodward book revelations rock Washington MORE (N.C.), spoke out against the agreement.

“I’m proud to serve in leadership and will continue to advocate for things that are good for our body, our conference, but also I have to do due diligence in speaking out where I feel like we overshot the fiscal runway, and I think that’s what we’re doing in this particular time frame,” Walker told The Hill on Tuesday.

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But upon leaving a GOP leadership meeting Tuesday evening, Walker appeared to soften his opposition by telling reporters “we’re still learning and listening.” He also didn’t rule out the possibility of ultimately voting in favor of the measure.

McCarthy told reporters he is “100 percent” confident Trump wouldn’t backtrack on the deal. He added that “I think we’ll have the votes.”

While most Democrats are expected to vote for the deal, some have voiced concerns about increases in defense spending.

“I am pleased that the budget deal lifts the debt ceiling and moves us past the austerity of the Budget Control Act,” Rep. Ro Khanna Rohit (Ro) KhannaThe Hill Interview: Jerry Brown on climate disasters, COVID-19 and Biden's 'Rooseveltian moment' Congress needs to prioritize government digital service delivery DeJoy defends Postal Service changes at combative House hearing MORE (D-Calif.), a Congressional Progressive Caucus leader who is undecided on the budget deal, said in a statement. “That said, I remain concerned that defense spending has increased $100 billion since President Trump took office and now represents nearly 60% of discretionary federal spending.”

Khanna also expressed concerns that Democrats are losing their leverage “by agreeing to a lifting of the debt ceiling for the remainder of this term but then in turn handcuffing a future progressive President in 2021.”

Scott Wong and Juliegrace Brufke contributed.