Murkowski said the job needs to go to an Attorney General who will "check the worst impulses of the administration," and she doesn't think Blanche would do that.
GOP Sens. Cassidy and Murkowski met with acting AG Blanche as they weigh whether to support his nomination to serve as attorney general, sources told ABC News.
Murkowski, a prominent critic of the Trump administration, has long represented Alaska and is broadly recognized as one of the Senate Republicans most likely to break with her party on key votes.
Pretti's death marked the second fatal incident of the ICE deployment to Minneapolis, following the shooting of Renee Good, whom an agent shot while in her vehicle.