If he does not, Congress has 60 days to decide whether to reimpose sanctions waived under the deal.
Supreme Leader of the Islamic Revolution and Commander-in-Chief of the Armed Forces Ayatollah Seyed Ali Khamenei on Sunday warned that "any wrong doing in connection with the nuclear deal will spark reaction of the Islamic Republic of Iran", IRNA reported.
"All the wrong steps by the domineering regime regarding the JCPOA will lead to a corresponding reaction from the Islamic Republic", Khamenei said, as quoted by the Islamic Republic News Agency.
On regional issues, he noted that the reasons behind insecurity in the Middle East can be traced to the "wicked and mischievous interventions" by the US.
The debate around the Trump administration's policy towards Tehran continues, as the worldwide community awaits this week's meeting between U.S. secretary of state Rex Tillerson and his Iranian counterpart Mohammad Javad Zarif in NY on the sidelines of the UN General Assembly.
During his trip, Rouhani will deliver a speech at the UN General Assembly and will urge the United States to abide by its commitments to the nuclear deal reached in 2015.
Rouhani, speaking on Sunday before leaving for NY, said the USA should join the countries that continue to support the nuclear deal.
On Saturday, Rouhani urged the European Union to press the United States to abide by its commitments to the nuclear deal reached in 2015, Tehran Times daily reported. The Iranian nation stands strong.
Iran said last month it could abandon the nuclear agreement "within hours" if the USA imposes any new penalties, after Washington ordered unilateral sanctions over Tehran's ballistic missile tests. He used an analogy of a dinner party on Sunday to describe how countries are benefiting from the 2015 nuclear deal, known as the Joint Comprehensive Plan of Action, or JCPOA.
The global agreement is facing a serious threat of collapse as tensions mounted between Tehran and Tehran recently.