Trump could theoretically repeal the resolution by introducing a new resolution at the UN that completely revokes this one. He would then need to get at least eight other countries to vote for it, as well as ensure that none of the Security Council’s other permanent members — Russia, the United Kingdom, France, and China — veto it.
Trump’s pick to be the next US ambassador to the UN, Nikki Haley, would almost certainly support such a move. Haley is perceived as being staunchly pro-Israel: As governor of South Carolina, she passed legislation against the so-called BDS (boycott, divest, sanctions) movement — an international campaign aimed at punishing Israel economically for its actions and policies toward the Palestinians.
She also publicly supported Netanyahu’s objections to the Iran nuclear deal when she delivered the Republican Party’s official response to Obama’s last State of the Union back in January. Haley said that if the GOP were to control the White House, “we would make international agreements that were celebrated in Israel and protested in Iran, not the other way around.”
But it is extremely unlikely that Haley and the Trump administration would actually be able to get eight other countries on the Security Council to support a measure revoking this most recent resolution. That’s because, as mentioned above, the notion that Israeli settlements are illegal under international law is widely held by UN member countries.
Finally, even if the Trump administration did manage to get eight other countries to support such a measure, a permanent member veto would be likely, as Russia, China, Britain, and France — all of whom have veto power — all supported Friday’s measure, which passed 14-0.