Tim Kaine actually said...

Rejoining the old nuclear accord is a nonstarter, as far as I am concerned, and it does not meet U.S. national security interest.

The Biden administration's highest priority and ours here in Congress must be to prioritize resources and respond to the challenges posed by...

This needs to be something that is embraced by all of us, not one of the parties.

What is clear is that the Trump administration was tougher on them than the present Biden administration has been so far.