Jeff Flake actually said...

Congress could in legislation require that to be addressed before U.S. sanctions come off.

I fear that if we are reluctant, if this administration is reluctant, to even countenance legislation reaffirming Congress' right to reimpos...

This really does come down, in terms of Congress' role, as to which are nuclear-related sanctions and which are not.

What would constitute reintroducing, re-imposing sanctions specified, existing sanctions.