Signed by the United States, Britain, France, Germany, Russia, China, the European Union and Iran, the deal relieved sanctions on Tehran in exchange for giving up its nuclear weapons programme. With Iran not having violated the deal, Trump's efforts to kill it are fueling a lot of reaction at home and overseas.
US President Donald Trump has always been sending message that Iran and P5 1 countries ( United States, Britain, China, France, Russia and Germany) will cancel nuclear treaty signed in 2015, and United Kingdom repeats every chance that it depends on agreement.
European officials have categorically ruled out renegotiating the deal, but have said they share Trump's concerns over Iran's destabilising influence in the Middle East.
The plan is also expected to highlight how the United States can work with allies to counter Iranian behavior and also address certain flaws in the nuclear deal.
If Trump does decertify the accord as expected, it would put him at odds with Defense Secretary James Mattis, who last week said Tehran was "fundamentally" in compliance with the agreement and that the USA should stick with the pact.
"Withholding certification would be a distraction from the real issues ... and it's playing with fire", Engel said, adding that the move would be viewed by Iran and countries around the world as the first step toward withdrawing from the deal.
"As flawed as the deal is, I believe we must now enforce the hell out of it", said the California lawmaker.
This approach could allow the United States to stay in the deal but help Trump avoid the political headache of having to re-certify it every 90 days. But many of his top national security aides don't want to dismantle the agreement, and America's European allies have lobbied the Trump administration and Congress to preserve the accord.
Trump, who has been sharply critical of Iran and accused Tehran of working with North Korea on lethal weapons, faces an October 15 deadline on whether to certify to Congress that Iran is compliance with the terms of the nuclear agreement.
The certification would also demand that the intelligence community produce judgments on a range of Iranian behavior that is not covered by the nuclear deal, including ballistic missile testing and development, support for Lebanon's Hezbollah movement and Syrian President Bashar Assad, threats to Israel and the Mideast, according to the drafts.
A decision by Trump to decertify the deal would leave it at grave risk, with the US Congress having 60 days to decide whether to re-impose specific sanctions on Tehran that were lifted because of the diplomatic pact.
Engel said at the hearing that killing the deal would be a "grave mistake", since it is in place and backed by US allies and other powers.
Congress was broadly opposed to the deal two years ago, but it's not clear that's the case anymore. Among them were Reps.
He has criticised the agreement's "sunset clauses", under which some restrictions on Iran's nuclear programme would expire over time.
Sen. Ben Cardin of Maryland, the top Democrat on the Foreign Relations Committee, was one of four Senate Democrats who opposed the Iran nuclear agreement in 2015. "Once it was entered into, once it was implemented, we want to see it enforced". We encourage United States to assess se results in security context.