Edward Markey actually said...

We have made clear that Iran's continued malign activities in the region... have undermined the expectations set out in the JCPOA.

So it seems that, at this point, the Trump administration has forgotten this.

The President has threatened to 'tear up' the Iran nuclear deal, the Joint Comprehensive Plan of Action (JCPOA).

In Iran, we have experienced firsthand how incredibly difficult it is to curb nuclear proliferation once the ball is rolling inside of that ...