US special envoy for Iran Brian Hook made the comments at an event at the Hudson Institute on Wednesday.
“The new deal that we hope to be able to sign with Iran, and it will not be a personal agreement between two governments like the last one, we seek a treaty,” he told the audience.
He further said that the nuclear deal, officially called the Joint Comprehensive Plan of Action (JCPOA), lacked support among members of the Republican-held Congress, when it was clichéd under former US President Barack Obama.
