US House Speaker John Boehner pledged that Republicans would continue to make every effort to scuttle the nuclear deal with Iran.
The debate on the nuclear agreement struck between world powers and Iran "is far from over," Boehner said at a press conference on the Capitol Hill on Thursday, vowing to "use every tool at our disposal to stop, slow, and delay this agreement".
Boehner's remarks came after Senate Democrats had garnered enough votes needed to block passage of a disapproval resolution against the agreement.
The P5+1 group - the US, Britain, France, China, Russia and Germany - reached a comprehensive nuclear deal with Iran on July 14.
The accord would provide Iran relief from sanctions in exchange for limits on its controversial nuclear programme.
"Republicans will continue to do all that we can do to stop the president's nuclear agreement with Iran," said Boehner.
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"By putting party first, Democrats are ignoring the will of the American people and avoiding the judgment of history."
House Republicans are changing their strategy to voice their opposition to the deal, mulling the vote on a resolution stating the Obama Administration did not submit all the documents related to the Iran deal and therefore the 60-day congressional review period has yet to start.
They specifically refer to documents from the International Atomic Energy Agency (IAEA) on the Iran nuclear deal.