On Thursday, the Senate voted 99-0 to extend the Iran Sanctions Act, which authorizes a president to prevent investment in Iran's energy sector and other sensitive industries. While Obama has waived most sanctions under the nuclear accord, congressional leaders said keeping them in reserve provides valuable leverage against Iran. White House spokesman Eric Schultz said the bill won't interfere with the U.S.-led nuclear agreement and he expected the president to sign it.

"If this law is implemented it will be a blatant violation of the Iran deal and it will lead to our resolute answer," Iranian President Hassan Rouhani told parliament on Sunday.

In response to the Senate vote, more than 260 members of Iran's 290-seat parliament have called on Rouhani's government to take unspecified reciprocal action against the U.S., Ahmad Amir-Abadi Farahani, a member of parliament's presiding board, said in a statement cited by the official Islamic Republic News Agency.