Ever since the White House secured its framework agreement with Iran to prevent the state from developing atomic weapons, the administration has been focused on shoring up American domestic support for the prospective nuclear deal.

Facing the prospect of a veto-proof majority in the Senate for a bill that would reassert Congress’s authority to ratify foreign agreement, the White House appears to have backed off its earlier opposition to allowing congressional lawmakers the ability to scrutinize and approve of the arrangement with Iran.

But extending to the deal’s critics on Capitol Hill the power to modify its terms could have far-reaching implications. “The bill, once signed, would also give lawmakers access to the full text of the deal as well as any classified information underlying it,” The Daily Beast’s Shane Harris reported.

One change to the bill now gives Congress 52 days to review the final agreement, instead of 60. But that still gives lawmakers plenty of time to have their say and potentially muck up the works. The White House would also now be freed from from having to certify that Iran no longer supports terrorism. But the original legislation also didn’t expressly tie that certification to the lifting of sanctions.

Congress isn’t the only party that would like to revise the terms agreed to in Lausanne. According to CNN security reporter Elise Labott, Iran’s parliament is also making revisions to the arrangement that American negotiators are probably going to find unacceptable.

#iran parliament nuclear committee publishes fact sheet w/ "revisions" to framework, doubling centrifuges and cutting time of deal in half

— Elise Labott (@eliselabottcnn) April 15, 2015

#iran "revisions" foreseeable when framework wasn't signed at #IranTalksLausanne

— Elise Labott (@eliselabottcnn) April 15, 2015

And that’s why you always write your legacy-sealing diplomatic agreements with hostile and revisionist powers down on paper.

“The factsheet urges operation of 10,000 centrifuge machines at Natanz and Fordo, a maximum 5-year-long duration for the deal and Iran’s nuclear limitations, replacement of the current centrifuges with the latest generation of home-made centrifuge machines at the end of the five-year period,” read an Iranian statement published by the Iranian Fars News Agency.

The text of the factsheet which was presented by Head of the Nuclear Committee Ebrahim Karkhaneyee on Wednesday includes the necessity for respecting the redlines and guidelines specified by Supreme Leader of the Islamic Revolution Ayatollah Seyed Ali Khamenei, the reversible nature of Iran’s decisions in case of the other side’s non-commitment to its undertakings and the annulment of all sanctions together immediately after the first day of implementation of the final agreement.

The revision also necessitates commitment to both sides’ undertakings based on the Geneva agreement, fair and reasonable relations between the givings and takings, not impairing the country’s security and military boundaries and national interests, providing 190,000 SWUs (Separative Work Units) of nuclear fuel enrichment capability needed by Iran, production of fuel for Bushehr nuclear power plant immediately after the end of contract with Russia, safeguarding the nuclear achievements, actual operation of all nuclear installations of Iran not in words, but in action, continued Research and Development (R&D) works and scientific and technological progress in Iran and the immediate use of the results of R&D in the country’s industrial enrichment cycle.

It is safe to say that international observers who were disappointed with the terms John Kerry and others agreed to in Switzerland will find Iran’s revisions to be laughable.

On Wednesday, Iranian President Hassan Rouhani added that the Islamic Republic would only accept the terms of a final nuclear arrangement if all sanctions against Iran were lifted before that accord went into effect. “If there is no end to sanctions, there will not be an agreement,” Rouhani said in a televised interview.

If Russia’s decision to lift a moratorium on the sale of advanced S-300 anti-air missiles to Iran, effectively neutralizing the West’s ability to execute strikes against Iranian nuclear targets without great human cost, hasn’t made the administration think twice about this deal, nothing will. But if it seemed like it would be a hard task to reach a final deal in June when the framework agreement was revealed in March, it appears like a nearly impossible challenge today.