GOP lawmakers in both chambers of Congress have come out against the idea of lifting restrictions and loosening sanctions that prevent Iran from using U.S. currency in business transactions.

Department of Treasury officials first told the Associated Press they are prepared to grant a general license making the currency exchanges legal, while still keeping some of the restrictions in place.

In the wake of the reports, Sens. Marco Rubio of Florida and Mark Kirk of Illinois wrote a letter, dated March 30 and released Thursday, to Treasury Secretary Jack Lew,  expressing their concerns and warning the move could lead to further destabilization in the region.

The Republican senators highlighted that Iran breached their end of the Joint Comprehensive Plan of Action, also known as the Iran deal – which provided the country with billions of dollars, which many in Congress fear could be used to fuel terrorist activity – by testing ballistic missiles capable of carrying a nuclear warhead during the eight-year ban in the agreement.


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