America’s decades-old bipartisan consensus on Israel has been shattered The Democratic establishment has faced growing pressure to change its stance on Israel. It has finally begun to do so. Last week, more than 100 House Democrats voted to cut off military aid to Israel.

Though the amendment failed because some Democrats and almost all Republicans voted against it, it exposed something far more significant than the legislative outcome: The bipartisan consensus that shielded Israel from meaningful congressional scrutiny for generations is beginning to fracture. For decades, military assistance for the Israeli army was among Washington’s most sacrosanct commitments enforced by both parties, influential pro-Israel lobbying organisations, and a foreign policy establishment that treated it as a cornerstone of American strategy in the Middle East. That consensus is no longer immutable.

Nothing better illustrates this transformation than Representative Nancy Pelosi’s vote. For decades, Pelosi was among Israel’s most dependable Democratic allies. Yet the former House speaker joined more than 100 members of her party in supporting an end to military assistance, arguing that Americans were demanding an end to a perpetual cycle of war.

Her vote reflected a political reality Democratic leaders can no longer ignore: The party’s base has fundamentally changed, and old assumptions about Israel no longer command automatic loyalty. The transformation had been building for years, but Israel’s war on Gaza became the decisive turning point. Long before the conflict, many Democrats had grown uneasy with relentless settlement expansion, the collapse of a meaningful peace process, and Prime Minister Benjamin Netanyahu’s alliances with far-right parties hostile to Palestinian statehood.

Israel was shifting in Democratic minds from an indispensable ally into a political and moral liability. Gaza fundamentally altered the debate. The unprecedented destruction and civilian suffering – broadcast in real time through social media – transformed years of quiet unease into an unmistakable demand for accountability.

The transformation did not begin in Congress – it began on university campuses. From the earliest weeks of Israel’s war on Gaza, student organisers emerged as the moral and political vanguard of a movement that challenged decades of bipartisan orthodoxy. Encampments, teach-ins and demonstrations spread from Columbia University on the East Coast to UCLA on the West, transforming Gaza from a distant foreign policy issue into one of the defining domestic political questions confronting a new generation.

What began as campus activism quickly evolved into a broader generational revolt against the Democratic Party’s traditional approach to Israel. Rather than recognising the depth of that shift, much of the Democratic establishment chose confrontation over engagement. Many party leaders defended aggressive crackdowns on student protests.

Images of peaceful demonstrators being arrested, suspended and forcibly removed convinced many younger voters that Democratic leaders were more interested in preserving an outdated foreign policy consensus than listening to their own base.