White House officials said they have fully complied with the review law, including briefing any member of Congress who asked to learn more about the IAEA agreements.

“I don’t know if they don’t like how the results are shaping up, or maybe they’re just getting second thoughts about casting a vote to put us on the road to another military conflict,” White House spokesman Eric Schultz said about the prospect of a House GOP suit on Wednesday.

Some Republicans said a lawsuit likely would fall short in trying to block the deal.

“By the time you sue him, Iran will have a nuclear weapon, so I think that’s probably not a viable route,” said Sen. Lindsey Graham (R., S.C.).