U.S. Vice President Kamala Harris speaks to supporters at the Redford Fire Department on October 4 in Redford, Michigan. (Brendan Smialowski/AFP/Getty Images via CNN Newsource)

(CNN) โ€” Vice President Kamala Harris is expected to meet Friday with a group of Arab American and Muslim leaders in Flint, Michigan, according to three sources familiar with her plans, but frustration over the Harris campaignโ€™s outreach efforts is boiling over amid Israelโ€™s recent escalations in Lebanon.

The gathering comes as the Harris campaign works to garner support within the community in the face of the ongoing Israel-Hamas war that has expanded to a multifront conflict involving Iran, which launched missiles at Israel this week, and Iranian-backed groups in Lebanon and Yemen.

Michigan, which Joe Biden narrowly won in 2020, will be a crucial battleground again this November and is home to a large Arab American population.

Emgage Action, an organization aimed at boosting the Muslim American vote, endorsed Harris last month while acknowledging โ€œstrong disappointmentโ€ with the Biden administrationโ€™s stance on Gaza. The leaders of Emgage Action are expected to participate in the meeting, according to one of the sources.

CNN has reached out to the Harris campaign for comment about the meeting.

Absent from the guest list were leaders of the โ€œUncommittedโ€ movement, which sprung up during the Democratic primaries this year in opposition to the Biden administrationโ€™s policy on the war in Gaza. Harris interacted with leaders of the group in early August during a photo line at the Detroit airport.

The group has called on the vice president to hold meetings with families affected by the war after her campaign and national Democrats denied the groupโ€™s previous request for a Palestinian American to speak during the Democratic convention in Chicago this summer.

Vice President Kamala Harris is expected to meet Friday with a group of Arab American and Muslim leaders in Flint, Michigan as frustrations boil over Middle East escalation. In this September 2 photo, Pro-Palestinian activists demonstrate in Detroit where Harris was scheduled to speak. (Scott Olson/Getty Images via CNN Newsource)

Uncommitted leaders have since announced that their group will not endorse Harris, though they also warned against a vote for Donald Trump or, in states where they might appear on the ballot, third-party candidates.

Uncommitted movement co-founder Abbas Alawieh, a former Capitol Hill staffer, confirmed Friday that his group was not invited to the meeting with Harris.

In a social media post, Alawieh said he was โ€œglad our pressure is helping yield more engagement. What we need right now is for the @VP to specifically say that as president she will respect international humanitarian and U.S. law and stop sending the Israeli military weapons for war crimes.โ€

James Zogby, a co-founder of the Arab American Institute and a Democratic National Committee member for more than 30 years who addressed the Uncommitted movement during the Chicago convention, told CNN he turned down an invitation to Fridayโ€™s meeting with Harris. He cited growing frustration with what he described as a campaign more concerned with optics than addressing the anger and anxiety among Arab American voters.

Zogby was part of a Wednesday call with Harris national security adviser Phil Gordon that the White House described as a virtual gathering with โ€œMuslim, Arab, and Palestinian American community leadersโ€ to discuss the latest developments in the Middle East.

โ€œThere was no ground broken. I wasnโ€™t quite sure what the intent was other than to just say โ€ฆ that they met with leaders. There were no leaders,โ€ Zogby said of the Wednesday conversation.

That call and other communications with the Harris campaign, and Bidenโ€™s before that, have irked the longtime Democratic pollster. And Israelโ€™s escalation in Lebanon has also turned up the heat in states like Michigan, where Lebanese Americans have made up a major part of the Democratic coalition.

โ€œWith Lebanon in flames, theyโ€™ve got a bigger job. And I donโ€™t think theyโ€™re ready to handle it,โ€ Zogby said of the Harris campaign. โ€œItโ€™s sort of like trying to sell a car to somebody with terminal cancer. โ€˜Whatโ€™re you talking for? I have bigger things on my mind right now.โ€™โ€

Abed Ayoub, the national executive director of the American-Arab Anti-Discrimination Committee, said there have been โ€œmany meetings with both the campaign and administration. They know our concerns and demands.โ€

โ€œOur position and work is focused on bringing an immediate ceasefire, and an end to the genocide in Palestine and the war on Lebanon,โ€ said Ayoub, who noted that his group has nearly 130,000 active voters as members, including 7,500 in Michigan.

This week, Harrisโ€™ running mate, Minnesota Gov. Tim Walz, took the campaignโ€™s pitch to Emgage Actionโ€™s โ€œMillion Muslim Votes: A Way Forwardโ€ summit.

โ€œI know the pain of this community is deep. Our hearts are broken. The concern of the vice president and Harris and I – itโ€™s on our minds every day. The scale of death and destruction in Gaza is staggering and devastating. Tens of thousands of innocent civilians killed, families fleeing for safety, over and over again,โ€ Walz said at the virtual event.

Harris has occasionally been disrupted at campaign rallies by pro-Palestinian protesters. In those moments, the vice president, who has spoken about the devastation in Gaza, has stressed that the administration is working toward a ceasefire deal.

Zogby said Friday he โ€œdesperatelyโ€ wants Harris to win but is concerned about the campaignโ€™s efforts to stage-manage the issue.

โ€œThey have to say something about the issue thatโ€™s on peopleโ€™s minds,โ€ Zogby said, โ€œand they just donโ€™t seem able to bring themselves to talk about it.โ€