Question

In 2015, U.S. President Barack Obama and leaders of the United Nations Security

Council's other permanent member states signed, along with Germany and the
European Union, an agreement with Iran; its goal was to prevent Iran from
developing nuclear weapons.
While the deal won praise from leaders worldwide, the plan never won majority
support in Congress, Congressional division over what to do about the agreement
meant, however, that the United States stayed a party to the agreement-at least
until 2018, when President Donald Trump withdrew the country from it, without
legislative consultation.
Why were Obama and Trump similarly able, despite their opposing views, to act on
the Iranian nuclear deal without consulting Congress?

Answer 1

Both President Obama and President Trump were able to act on the Iranian nuclear deal without consulting Congress due to the use of an executive agreement by President Obama and the withdrawal by President Trump.

Step-by-step explanation:

Both President Barack Obama and President Donald Trump were able to act on the Iranian nuclear deal without consulting Congress due to the difference in the form of the agreement they used. President Obama chose to use an executive agreement, which does not require congressional approval, while President Trump chose to withdraw from the agreement without legislative consultation. The use of an executive agreement allowed the presidents to act unilaterally on the agreement, bypassing the need for congressional support.