WASHINGTON — House Democrats on Wednesday postponed indefinitely a vote on a resolution condemning anti-Semitism after a contentious meeting in which some new members confronted leaders over their push to rebuke Rep. Ilhan Omar of Minnesota.

In the party’s weekly closed meeting, Democrats protested the way Speaker Nancy Pelosi and other leaders tried to rush out a resolution this week responding to Omar’s latest remark about Israel. Omar last week suggested the Jewish state’s supporters are pushing lawmakers to pledge “allegiance” to a foreign country.

That forced Democratic leaders to respond, but their draft of the resolution condemning anti-Semitism angered Omar’s fellow freshmen and their liberal supporters. Pelosi had already said the measure would be broadened to decry anti-Muslim bias. But that didn’t quiet the ranks, and the party’s first major dissension broke out in an uncomfortable confrontation, according to three officials familiar with the episode, who, like others, spoke on condition of anonymity to discuss private matters.

The upheaval prompted Democrats, who regularly celebrate their diversity, to push off a decision about the resolution.

“It is shameful that House Democrats won’t take a stronger stand against Anti-Semitism in their conference,” President Donald Trump tweeted. “Anti-Semitism has fueled atrocities throughout history and it’s inconceivable they will not act to condemn it!”

Rep. Jahana Hayes of Connecticut complained that Pelosi left Democrats out of the loop on the resolution’s details.

“My comments were about the process we are using when concerns arise,” Hayes said in a statement. “As a member of Congress I should not get important information from cable news.”

Two people with knowledge of the situation said Hayes was engaged in conversation with a colleague when Pelosi asked her a question. The congresswoman did not respond because she did not hear the speaker address her, these people say. Most lawmakers had left the room at the time.

Then Pelosi said, “If you’re not going to listen to me, I’m done talking,” according to a person in the room.

A senior Democratic aide said Pelosi had earlier acknowledged the issues and said the resolution was not final. One person in the room quoted the speaker as saying the leaders had tried to increase communication so that members stay united and have “a clearer understanding of what our purpose is as a caucus, how we proceed.”