U.S. Senator Chuck Schumer (D-NY). Photo: Wiki Commons.

New York Senator Chuck Schumer will choose his career over moving to scuttle the nuclear deal with Iran, a columnist for the New York Post predicted on Monday.

If the nuclear deal struck by negotiators from Iran, the U.S. and five other major powers that mostly wanted this deal to go through had been raised and supported by a Republican president, Schumer almost certainly would have rejected it, wrote Michael Goodwin.

But since the president is Barack Obama and Schumer is eyeing the Senate Democratic leadership, the New York lawmaker is going to have to let go of his opposition to the deal, which is shared by many Republicans and pro-Israel groups and lobbies, among others.

Goodwin wrote: “… breaking with a Democratic president on a signature, legacy issue would be so huge as to jeopardize the position he has craved and earned. Obama would see the act as unforgivable treason and demand a replacement.”

Schumer lost his power to vote independently as soon as he decided to reach for the party leadership, Goodwin said.

Congress is in the midst of a review period for the Iran nuclear deal, which will ultimately culminate in a congressional vote on whether to back or oppose the international agreement. If Congress rejects the deal, Obama has vowed to use his veto power, though a two-thirds majority in the House and Senate could override that veto.