The president of the United States stood tall and proud at his North Carolina rally as the crowd chanted loudly for him to deport Rep. Ilhan Omar (D-Minn.), one of the first two Muslim women in Congress. Just days before, Donald Trump had doubled down on his racist attacks against Omar and three of her freshman colleagues.

Back in Washington, Muslim organizers and policymakers were busy preparing for a historic moment: what they have called the first national gathering of Muslim Americans in politics.

But there was a problem.

With only a few days left until the July 23-24 conference, not a single Democratic presidential candidate was set to attend in person. HuffPost contacted every candidate for comment. Some replied to note schedule conflicts; others didn’t respond at all.

That apparent lack of interest brings into harsh light what many Muslims say is an apathetic attitude within the Democratic Party toward their community.

In politics, Muslims have largely leaned left –– despite holding many traditionally conservative values –– mostly due to the fact Democrats have tended to be more accepting of them while Republicans have vilified Islam. According to 2016 data, Muslim Americans are the “most Democratic-identifying religious group” in the nation.

But over the last few years, Muslim constituents have also voiced their concerns with the Democratic leadership for not taking a strong stance against Islamophobia. They complain that their communities are only remembered during discussions of national security and terrorism. More recently, Democratic Muslim voters have grown concerned about how the Democratic leadership has treated the first two Muslim women in Congress.

Next week’s Muslim Collective for Equitable Democracy conference will be hosted in Washington by the Muslim Caucus, a national nonpartisan group that seeks to build organizing structures for Muslims within politics.

When the conference organizers reached out to Democratic presidential candidates, they told HuffPost that many ― including former Vice President Joe Biden and New York Mayor Bill de Blasio ― ignored the invitation. They said that others, including California Sen. Kamala Harris, South Bend, Indiana, Mayor Pete Buttigieg and former Housing and Urban Development Secretary, Julián Castro declined the invite, while Vermont Sen. Bernie Sanders, New Jersey Sen. Cory Booker and Minnesota Sen. Amy Klobuchar agreed to send prerecorded videos. Massachusetts Sen. Elizabeth Warren confirmed to HuffPost that she was scheduled to participate via live stream.

Omar and Rep. Rashida Tlaib (D-Mich) are scheduled to speak in person. Minnesota Attorney General Keith Ellison, former Michigan gubernatorial candidate Dr. Abdul El-Sayed and Khizr Khan, the father of a Muslim American war hero killed in Iraq and the man who famously held up the Constitution at the 2016 Democratic National Convention, are also confirmed to attend.

But the brushoff from so many leading Democrats does not sit well with Ghazala Salam, the president and founder of the Muslim Caucus. “It’s extremely disappointing,” she said. “How is democracy as accessible as everybody is telling me it is when we’re not even getting the attention of the presidential candidates?”