In this April 9, 2015 file photo, Iranian President Hassan Rouhani delivers his speech in a ceremony marking National Nuclear Technology Day, in Tehran, Iran. Legislation giving U.S. Congress a chance to review and possibly reject any final nuclear deal with Iran is facing a test vote in the Senate on Thursday, May 7, 2015.

Senate OKs bill giving Congress review of Iran nuclear deal

The vote follows months of wrangling over the legislation while the U.S. and five other nations negotiated with Iran.