“There’s two big concerns,” said Tyler Cullis of the National Iranian American Council. “First, Europe could reciprocate the US measures — particularly against US travelers to Iran — in ways that undermine attempts to build bridges between Americans and the Iranian people; and second, by excluding European business-travelers to Iran from the US’ visa-waiver program, Congress puts the US in violation of its commitments under the JCPOA [Joint Comprehensive Plan of Action] to refrain from any action that would interfere with the normalization of trade and economic ties to Iran.”