A legislative amendment that would block U.S. security aid to Israel has split Democrats in Congress to such an extent that House Minority Leader Hakeem Jeffries has decided not to urge his party to oppose it. Instead, he told Democrats to vote their conscience, setting up an opportunity for lawmakers to go on the record about their views. Some are already doing so.“The Democratic Party as a whole needs to shift its policy on Israel and Palestine,” Representative Greg Casar, the chair of the Congressional Progressive Caucus, told me. “I think that was clear during the last presidential election. I think it’s clear to me as a moral issue. And I think that [Wednesday’s] vote could be one step towards us beginning to shift our position as a party.”The amendment in question, brought by GOP Representative Thomas Massie, would cut $3.3 billion in security assistance that the U.S. has pledged to Israel between 2019 and 2028 and further stipulates that “none of the funds made available under this Act shall be obligated or expended for Israel.” Lawmakers are expected to vote Wednesday on the amendment, which Massie is hoping to attach to a $47 billion foreign affairs spending bill.On Tuesday, Jeffries wrote in a “Dear Colleagues” letter that he was planning to vote against the amendment but had decided not to whip the caucus into joining him, underscoring how divided the Democrats have become on the question of America’s relationship with Israel.In his letter, Jeffries wrote that he opposes the amendment because it is “overly broad,” prohibiting the use of funds for nonmilitary activities like U.S. embassy operations and humanitarian aid. He also expressed concern that Republicans will “weaponize” the amendment against Democrats—a potential reference to Republicans accusing Democrats of antisemitism for opposing aid to Israel.Even though Jeffries will vote against the amendment, his letter calls for a “change in direction,” signaling how much Democrats have changed their views toward aid for Israel. “Israel has an advanced economy and is capable of paying for its own sophisticated weapons,” he wrote. Future security agreements between the two countries, he wrote, should “strictly adhere to our human rights laws and values.”Representative Ocasio Cortez, who plans to vote “yes” on the amendment, told me that she thinks Jeffries’s decision not to whip “no” votes provides “flexibility” for Democrats to vote their conscience. Jeffries’s letter mirrors the advice given by J Street, the liberal Zionist advocacy organization. In a statement on Tuesday, J Street President Jeremy Ben-Ami wrote that the amendment is “poorly drafted, overly broad and being used by Republican leadership to divide Democrats rather than advance a serious debate about US policy.” Despite that, Ben-Ami wrote, the organization supports whatever votes members choose to cast. Some Democrats will likely vote “present” to avoid a hard “yes” or “no” vote, a decision J Street says it supports.Casar weighed in on the amendment in his own letter, explaining why he plans to vote for the amendment and encouraging the caucus to do the same. “The Democratic Party needs a new approach to Israel and Palestine,” Casar wrote. “I hope you will join me in beginning that process by voting yes on this amendment.”Casar said that winning over Democrats who have previously supported aid to Israel will be critical to the amendment’s passage. “For us to achieve the goal of restricting military aid to the Israeli military, we have to have members that previously voted for aid, and I expect that you’ll see that if we have the vote,” he told me.Though elected Democrats are divided on the issue, the party faithful’s views are clearer. According to a New York Times/Siena poll from May, 74 percent of potential Democratic voters oppose “providing additional economic and military support to Israel.” Just 20 percent support it.Despite this, the Massie amendment is still expected to fail, as nearly all Republicans are expected to vote against it.