You both are right but one is more consequential. Let's dive in:

Bombing Iran does not have bipartisan support, many Dems are voicing their opposition. The Dems even advanced a bill where the president would need congressional review to specifically bomb Iran in this instance.

The President making unilateral military decisions like bombing Iran does have bipartisan support. The Dems have not challenged it's constitutionality or proposed significant changes on this front and instead go for a case by case congressional veto. This policy is also aides in our genocidal program of Gaza...