2016 US Presidential candidates have been discussing the Iran nuclear agreement in Washington.
Donald Trump joined fellow Republican Senator Ted Cruz at a rally against the deal outside the US Capitol.
Meanwhile Democratic front-runner Hillary Clinton gave a speech supporting the accord.
Congress is currently debating the agreement but President Obama has already secured enough support to ensure it will pass.
Kate Fisher reports from the rally in Washington.
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Well hundreds of people gathered at the steps of the US capitol to voice their opposition to this nuclear deal with Iran. The main attraction was Donald trump, 2016 republican presidential candidate. He began his speech by saying he's done may deals in his life but none of them have been as badly negotiated as this one.
DONALD TRUMP, Republican presidential candidate
"I've been doing deals for a long time. I've been making lots of wonderful deals, great deals, that's what I do. Never ever, ever in my life have I seen any transaction so incompetently negotiated as our deal with Iran."
It wasn't only republican presidential candidates who took to the stage today to talk about the Iran deal, democratic frontrunner Hillary Clinton also took to the podium but she was defending the deal. She also criticised the republican contenders for the job that she wants.
HILLARY CLINTON, Democratic presidential candidate
"Several Republican candidates boast that they'll tear up the agreement in 2017 more than a year after it's been implemented, that's not leadership, that's recklessness."
That's just what GOP candidate senator Ted Cruz promised at the rally
SENATOR TED CRUZ, Republican presidential candidate
"Any commander-in-chief worthy of defending this nation should be prepared to stand up on January 17th 2017 and rip to shreds this catastrophic deal"
Well despite this show of opposition the deal is still being debated in the building behind us and President Obama already has enough votes to secure and ensure that the deal is implemented. So is all of this, just a little bit too little too late. Kate Fisher, Washington