Leading foreign policy voices in Congress say they are preparing to fight against an Obama administration effort to provide Iran unprecedented access to U.S. financial resources as part of an expanded package meant to address new demands from the Islamic Republic’s for greater economic concessions, according to several conversations between the Washington Free Beacon and top lawmakers.

The Obama administration is currently exploring new options to grant Iran more sanctions relief than promised under the comprehensive nuclear agreement reached last year, just days after Iran’s Supreme Leader gave a speech accusing the United States of interfering with Iranian banking.

Top foreign policy voices in Congress told the Free Beacon in recent days that they are exploring a range of responses if the Obama administration goes through with reported plans to grant Iran further concessions beyond the purview of the nuclear deal, which dismantled key nuclear-related U.S. sanctions against Iran. At least part of this action could violate current U.S. laws, they said.

The planned concessions could include access to the U.S. dollar and financial markets, which the Obama administration promised would never take place under the deal, according to recent disclosures first reported by the Associated Press.

The Iranian government has recently heightened complaints that it is not being granted enough relief from international economic sanctions as a result of the recently implemented nuclear deal.

The Obama administration’s latest move to placate the Iranians comes on the heels of a Free Beacon report last week disclosing that U.S. officials engaged in secret talks with Iran for years before agreeing in January to pay it nearly $2 billion in taxpayer funds.

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