US Democrats have rejected a second bid to stop President Barack Obama's nuclear accord with Iran, paving the way for its implementation, while Republicans refused to end the debate on the issue.
According to The Guardian, Senate Majority leader Mitch McConnell called the Iran nuclear deal "one of the most consequential foreign policy issues of our time."
Last week, the Republicans fell two votes shy of reaching the required count and were hopeful on Tuesday that the two Democrats would change their votes under pressure from constituents opposed to the deal.
The landmark accord was struck between the US, Iran and five world powers in July.
