Green Party's members will cast votes at their upcoming spring conference on a contentious motion demanding NHS workers be granted "free speech" rights concerning Gaza.
The proposal would see the party challenge the government's ongoing examination of anti-Semitism within the health service, which Sir Keir Starmer commissioned last October.
The Prime Minister initiated the review after stating that too many instances of anti-Semitism were "simply not being dealt with".
Titled "There is a crisis in healthcare", the motion urges the party to tackle "oppression abroad and repression at home", claiming "NHS staff cannot speak up against genocide".
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Should members approve the motion, Green MPs would be whipped to oppose the government's plan addressing anti-Semitism and other forms of racism.
The review, led by Lord Mann, the Government's anti-Semitism tsar, has yet to publish its conclusions and recommendations.
During the 18 months following the Hamas terror attacks of October 7, the General Medical Council received nearly 500 anti-Semitism complaints concerning 123 doctors, with 84 per cent dismissed at the triage stage.
Zack Polanski with Ben Jamal of the Palestine Solidarity Campaign at the party's conference in October
|GETTY
Several prominent cases prompted the investigation, including that of Dr Rahmeh Aladwan, a trainee orthopaedic surgeon who initially avoided suspension despite making throat-slitting gestures towards Jewish demonstrators and labelling a north London hospital a "Jewish supremacy cesspit".
The British-Palestinian doctor was subsequently suspended by the Medical Practitioners Tribunal Service and arrested by the Metropolitan Police following repeated posts about "Jewish supremacism".
Sir Keir also prohibited NHS staff from displaying pro-Palestine and other political symbols at work, introducing mandatory anti-Semitism training.
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Lord Katz, who formerly chaired the Jewish Labour Movement, expressed disbelief the Green Party's NHS priority for 2026 centres on blocking measures designed to shield victims from racist prejudice and discrimination.
"Zack Polanski should be utterly ashamed," he told The Telegraph. "He has allowed toxic anti-Semitism to tear through his party unchallenged, and this is the latest dangerous example of that."
He drew a stark contrast with his own party's approach, stating: "Labour took on the anti-Semites in our party.
"Polanski ignoring these vile actions on his own watch shows the Greens' claim to be a progressive party are a total farce".
The Greens have experienced a polling surge since Polanski assumed leadership in September, with a recent YouGov survey placing them at 21 per cent, trailing Reform UK by just two points, and surpassing Labour.
The Campaign Against Antisemitism accused the Greens of growing "more and more brazen" with each motion they put forward.
The organisation pointed to its own research indicating that 76 per cent of British Jews consider the party "too tolerant" of anti-Semitism.
A spokesman said: "The Green members behind this motion are evidently not interested in the details, but in the very principle of fighting the world's oldest hatred".
The group added that the party's willingness to debate such motions rather than condemn them and expel the proposers would only confirm the Jewish community's assessment.
A Green Party spokesman defended the democratic process, stating: "This is currently not policy. It is a proposed motion".
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