Lawmakers called for a unified response to what they describe as the US non-compliance with the 2015 nuclear deal by using the mechanism envisaged in the accord to address irregularities by any party.
Mohammad Ebrahim Rezaei also told ICANA on Sunday that the US interference with the pact's implementation amounts to its lack of commitment.
"It is imperative that the establishment mount a unified and unanimous response," he said.
"We should invoke the mechanism of complaint outlined in the Joint Comprehensive Plan of Action and take up the issue at the Joint Commission to expose the true face of America," he said, referring to the deal by its formal title.
The Joint Commission, comprising representatives from all the JCPOA participants, has been set up under the action plan and is tasked with monitoring it and addressing issues arising from its implementation.
Seven months have passed since the historic agreement negotiated with P5+1 (the five permanent members of the UN Security Council plus Germany) went into force to lift sanctions against Tehran in exchange for curbing its nuclear program.
But Tehran has expressed frustration that few trade deals are going through with international investors and firms, as foreign banks avoid clearing Iran-linked dealings on fears of possible penalties for unwitting breaches of residual US restrictions.
Under these non-nuclear sanctions, imposed over allegations of terrorism sponsorship and human rights violations, non-US banks are prohibited from using the US financial system to process dollar-denominated transactions involving Iranians.
Iran has called on the United States to do more to remove obstacles to the banking sector so that businesses feel comfortable with investing in Iran.
In addition, US Republican lawmakers, who control the House of Representatives and Senate, and unanimously opposed the JCPOA, have introduced frequent anti-Iran measures to undermine the deal.
The House has recently passed three measures: one to impose new sanctions on Iran over alleged terrorism support or human rights abuses, another to bar the US purchase of Iran's heavy water supplies and the third to block the Islamic Republic's access to the US financial system.
Also among the hostile measures were new amendments to the US visa law passed by Congress late last year, preventing visa-free travel to the United States for people who have visited Iran or hold Iranian nationality.
Irreparable Blow
Rezaei noted that the US behavior is most likely intended to deliberately create strife within the system, warning that if a unified stance is not adopted in response to the US moves, the Islamic Republic will suffer an "irreparable" blow.
Another member of parliament called on the government to begin documenting the US poor performance on the JCPAO.
"The government is expected to compile a report covering various aspects of the action plan to show to what extent westerners, particularly the US, have kept their promises and to document the US promise-breaking," Mohammad Javad Jamali also said.
Earlier this month, Leader of Islamic Revolution Ayatollah Seyyed Ali Khamenei criticized the US approach toward the deal, saying it testifies its untrustworthy nature and has substantiated the pointlessness of holding negotiations with the Americans and the need to stick to a distrustful view of US promises.
Jamali said the remarks of the Leader laid the roadmap for other Iranian officials.
"We cannot put up with the Americans' non-compliance any longer. It has been proven that the West was using the [nuclear] negotiations to kill time and is making up excuses to prevent the full implementation of the agreement," he said.
