“While I do not support the BDS movement, we must defend every American’s constitutional right to engage in political activity. It is clear to me that this bill would violate Americans’ First Amendment rights.” - Bernie Sanders, 2019
But I believe that these new sanctions could endanger the very important nuclear agreement that was signed between the United States, its partners and Iran in 2015. That is not a risk worth taking, particularly at a time of heightened tension between Iran and Saudi Arabia and its allies.
I'm not finding any evidence that Sanders has ever voted for a sanction in a final bill. It kind of doesn't matter anyway, because the president just unilaterally imposes sanctions, it seems.