U.S. President Barack Obama has signed into law legislation giving Congress a say on any international nuclear agreement with Iran.
Obama signed the Iran Nuclear Review Act of 2015 on May 22, after the measure overwhelmingly passed the House of Representatives and Senate earlier this month.
The legislation gives lawmakers the power to review and potentially reject an accord aimed at getting Iran to curb its nuclear activities in exchange for sanctions relief.
Iran and six world powers -- the United States, Russia, China, Britain, France, and Germany -- are aiming for a comprehensive agreement by the end of June.
Speaking to a Jewish congregation in Washington on May 22, Obama said he would "not accept a bad deal."
"This deal will have my name on it, so nobody has a bigger personal stake in making sure that it delivers on its promise," he added.
The six powers want limits on Tehran's programs that could have a military use. Tehran denies it is pursuing such weapons.
With reporting by AP