A Declining Friendship: How the Gaza War Is Reshaping Congressional Support for Israel

For decades, the bond between the United States and Israel was considered one of the few truly bipartisan pillars of American foreign policy. Republican and Democratic presidents alike stood shoulder to shoulder with Israeli leaders, military aid flowed freely, and bipartisan resolutions in Congress routinely affirmed unwavering solidarity with the Jewish state. That era, however, is now showing unmistakable cracks. In the wake of a strong electoral showing for Democrats—many of whom ran on sharply critical platforms regarding Israel’s military campaign in Gaza—the Jewish state finds itself with noticeably fewer friends on Capitol Hill. The unthinkable is now becoming the expected: support for Israel, once a sacred covenant of American politics, is being pulled into the same partisan churn as every other contentious issue in Washington.

To understand just how significant this transformation is, one must first appreciate the depth of the historical consensus. From President Harry Truman’s rapid recognition of the newly declared state in 1948, through the Six-Day War, the Yom Kippur War, and the Oslo Accords, Republican and Democratic administrations largely spoke with a single voice on Israeli security. The American-Israeli relationship was framed in moral terms—a shared commitment to democracy, a refuge after the Holocaust, a beacon of stability in a turbulent region. That framing explains why Congress, more often than not, delivered overwhelming margins for Israel-supporting legislation. The annual foreign operations bill, for example, typically sailed through both chambers with a combined vote tally in the hundreds, regardless of which party held the gavel. Pro-Israel organizations, most notably AIPAC, worked diligently to keep the relationship above partisanship, successfully recruiting politicians from both parties and playing a crucial role in shaping a narrative that criticism of Israel was out of bounds.

By the early 2020s, however, the tectonic plates of American politics had begun to shift. The Democratic coalition was growing more diverse, more youthful, and more critical of the Israeli government’s treatment of Palestinians. Among younger voters, the online discourse increasingly framed Israel not as a vulnerable victim, but as a powerful occupying force. Progressive activists and a new generation of “Squad” lawmakers openly questioned the status quo, using the language of civil rights, human rights, and international law. The political earthquake that hit the country in the last election cycle—a powerful Democratic surge in Congress that brought in a wave of freshmen who had campaigned on ending unconditional support for Israel—changed the arithmetic almost overnight. No longer could the party’s leadership rely on a reliable bloc of pro-Israel moderates; now there existed a well-organized, vocal minority that was not afraid to call the war in Gaza a turning point in American moral leadership.

The war itself has been the accelerant. After the horrific October 7 attacks and Israel’s subsequent military response, the scale of destruction in Gaza—tens of thousands of civilian deaths, a man-made famine, and the displacement of nearly the entire population—created a moral dilemma in the Democratic Party that could simply no longer be ignored. While many Democrats including the party’s leadership initially backed Israel’s right to retaliate, the images from Gaza, the experiences of aid workers, and the testimony of international human rights organizations fueled a backlash. Democratic primaries saw unprecedented numbers of voters electing candidates who had made a ceasefire a central plank of their platforms. The 2024 election cycle became a watershed: many of these newly elected members were not simply critics of Israel’s policies, but skeptics of the entire American military partnership with the country. With their arrival in Washington, the Congress that was once a comfortable echo chamber of support for Israel became a forum for open, acrimonious debate over military aid, human rights conditions, and even the very legitimacy of the Israeli state’s actions.

For Israel and its American allies, the consequences are substantial. In previous decades, Israel could lose the argument in the Oval Office and still count on Congress to override or pressure a president. That backup is fading. The strong Democratic presence on the Hill means that almost every future legislative proposal on Israel—whether a routine resolution, an aid package, or a military transfer—will face heightened scrutiny, amendments, and a chamber full of lawmakers willing to vote no. Already, we have seen the practical impact: the once-routine votes on Iron Dome replenishment have become bruising political battles; resolutions in favor of a ceasefire have passed symbolic tests; and the debate over providing offensive weapons has become a primary battleground. In the Senate, a handful of influential Democrats now insist that additional military aid be conditioned on measurable Israeli progress in allowing humanitarian access to Palestinians. The unconditional nature of the relationship—long the bedrock of Israeli strategic planning—has been eroded, perhaps irreversibly.

This new reality has also forced pro-Israel forces to recalibrate. AIPAC and other lobbying organizations, long masters of the bipartisan ledger, have begun pouring millions into Democratic primaries to defeat incumbent critics, often with only limited success. Their political spending, once an invisible threat, has become the subject of open scandal and counter-mobilization, with progressive groups now actively raising and spending to support exactly the kind of candidates AIPAC seeks to unseat. The result is a self-perpetuating cycle that makes the Israel issue even more partisan. As one former House staffer put it in a guarded interview, “Every battle, every primary, every attack ad, and every counterattack ad only deepens the division. The center is not holding, and the center is where Israeli support was strongest.” Indeed, moderate Democrats who remain supportive of the “special relationship” are caught between their constituents and their conscience, forced to answer for every military campaign and every casualty. Many have quietly retreated from the issue, preferring to focus on the economy or healthcare rather than defend a policy that no longer carries the moral weight it once did.

Looking ahead, the question is whether Israel can ever win back the bipartisan majority it once took for granted, and there are reasons for serious doubt. The demographic and ideological forces shaping the Democratic Party show no sign of reversing. Younger voters, minorities, and a growing number of white suburban progressives have all moved decisively toward a more critical posture on Israel’s conduct; as older, more pro-Israel voters pass away, their perspective will not be replaced. Meanwhile, Israeli politics itself has shifted to the right, with the rise of coalition governments explicitly tied to religious-nationalist settler movements, making it increasingly difficult for any American politician—particularly a Democrat—to frame the Israeli government as a committed partner for peace. A real compromise on a two-state solution, supported by an Israeli government willing to take concrete steps, might still rebuild a broader coalition, but that prospect appears remote at the moment.

What is clear is that the era when Israel could count on automatic, reflexive, bipartisan support in the United States Congress is over. The strong showing by Democrats who came to office with a mandate to question Israel’s war in Gaza has changed the institutional balance. Moving forward, the debate over Israel will no longer be about whether it has a right to defend itself—a point on which even most detractors still agree—but about the purpose, scale, and limits of that defense, and about what the United States is willing to co-sign. It is a shift that could force a long-overdue conversation about the nature of the alliance and the conditions attached to American tax dollars. But it also risks turning Israel into yet another domestic political football, thrown between parties that no longer see the world through the same lens. Israel’s greatest strategic asset, the loyalty of both American parties, is gone; and no amount of diplomacy, lobbying, or campaign spending can resurrect it on its own terms. The relationship, in short, has entered a new and uncharted era—one in which Israel’s friends in Washington are not only fewer, but far more conditional in their friendship.