It could have forced the United States to support the resolution and not issue its veto. That could have resulted in an embarrassment for the government of Benjamin Netanyahu, who took the US veto as a sign that they could continue with the Jerusalem settlement construction at Jebel Abu-Ghneim without fear of retribution from the United States. And, that support was lacking. Polling over the years has shown that Americans, while they support Israel, do not support Israel's settlement policies and they see the settler movement as a movement of extremists opposed to peace. That is reflected in the fact that official American foreign policy opposes Israeli settlements.
Communications strategy is the foundation of American politics.
Most campaigns spend as much as one-third of their operating budgets on public relations and lobbying. Because it is proven to be successful for American political candidates as well as for foreign political lobbying groups, most notably the Israelis. Issues are not individual in the world of politics. That is, every issue is related. What effects one issue effects them all.