Obama will try to rally Senate Dems on healthcare Sunday

President Barack ObamaBarack Hussein ObamaJudge orders Walker to hold special elections Mueller investigates, Peters quits Fox, White House leaks abound 2020 Dems compete for top campaign operatives MORE will meet with Senate Democrats on Sunday afternoon as party divisions over the healthcare reform bill have intensified.

Obama will attend a Senate Democratic caucus at 2 p.m. on Capitol Hill, according to a White House official. Divisions among the Democrats have increased over the last week over abortion language in the bill and the inclusion of a new public insurance plan.

Sen. Ben Nelson (D-Neb.) said he won't vote for the bill unless it restricts new federal healthcare subsidies from being used for abortions. He plans to bring up an amendment next week to include that restriction, which was added on to the House bill by centrist Democrats over the objections of most of the House Democratic Caucus.

Republicans have voiced support for the abortion restrictions but most Democrats are expected to oppose them. Republicans control only 40 seats, which means Nelson would have to pick up the support of at least 19 Democrats (or 18 plus one of two independents), an unlikely scenario given strong opposition from the Democratic base.

Obama will face a Democratic conference divided also over the public insurance plan. Senate Majority Leader Harry ReidHarry Mason ReidGOP pushes to change Senate rules for Trump Trump presses GOP to change Senate rules Only thing Defense’s UFO probe proves is power of political favors MORE (D-Nev.) has included a government-run insurance plan in the Senate bill. It includes an "opt-out" clause allowing individual states to decline the public option for their residents.

But centrist Sens. Joe Lieberman (I-Conn.) and Blanche Lincoln (D-Ark.) said they oppose any form of a public plan, leaving Reid short of the 60-vote threshold he needs.

Democratic senators have been holding meetings with Reid in his office since Friday to try to close those differences. Sen. Jay RockefellerJohn (Jay) Davison RockefellerSenate GOP rejects Trump’s call to go big on gun legislation Overnight Tech: Trump nominates Dem to FCC | Facebook pulls suspected baseball gunman's pages | Uber board member resigns after sexist comment Trump nominates former FCC Dem for another term MORE (D-W.Va.) said that the meetings involve 10 senators, "five moderates and five progressives." Those spotted heading into the room include Sens. Chuck SchumerCharles (Chuck) Ellis SchumerAmtrak to rename Rochester station after Louise Slaughter Conscience protections for health-care providers should be standard Pension committee must deliver on retirement promise MORE (N.Y.), Tom CarperThomas (Tom) Richard CarperWarren turns focus to Kushner’s loans Overnight Energy: Dems probe EPA security contract | GAO expands inquiry into EPA advisory boards | Dems want more time to comment on drilling plan Overnight Regulation: Senate takes first step to passing Dodd-Frank rollback | House passes bill requiring frequent reviews of financial regs | Conservatives want new checks on IRS rules MORE (Del.), Sherrod BrownSherrod Campbell BrownDemocratic senator: People don’t know what’s going on between Trump and Putin Power struggle threatens to sink bank legislation Pension committee must deliver on retirement promise MORE (Ohio), Russ Feingold (Wis.), Mary LandrieuMary Loretta LandrieuSenate GOP rejects Trump’s call to go big on gun legislation Project Veritas at risk of losing fundraising license in New York, AG warns You want to recall John McCain? Good luck, it will be impossible MORE (La.), Mark PryorMark Lunsford PryorMedicaid rollback looms for GOP senators in 2020 Cotton pitches anti-Democrat message to SC delegation Ex-Sen. Kay Hagan joins lobby firm MORE (Ark.), Nelson, Lincoln and Rockefeller.

"We had the generalities a couple days ago, now we're getting into some brass tacks, and I think it's moving," Feingold told reporters after emerging from one closed-door session Saturday morning.

But other liberal senators signaled they're willing to fight any attempts that would remove or further water-down the public option.

"It's been slowly moving more toward insurance company interests in the last four months, and those days are done," Brown said.

Brown repeated his call Saturday for Obama to get more involved in talks.

"It's pretty clear where the great majority of Congress is and the great majority of the country is on this bill, and I just want to see the president speaking out and talking to those members that are a little less enthusiastic to support it," Brown said.

Obama went to the Hill to meet with the House Democratic Caucus in November, delivering a pep talk in Saturday session minutes before the first in a series of crucial votes leading up to a final roll call on the House bill to guarantee near-universal health insurance.

“I am absolutely confident we’ll get this done,” Obama told House Democrats, according to a senior Congressional aide who briefed reporters after the meeting. “And when I’m in the Rose Garden, signing a piece of legislation to give healthcare to all Americans, we’ll look back and say this was our finest moment."

This story was updated at 1:40 p.m.