Former US president Barack Obama and California Governor Gavin Newsom praised Reiner's cinematic achievements, empathy, and commitment to social good.
Nancy Pelosi and fellow actors like Josh Gad and James Woods expressed devastation, highlighting Reiner's talent, kindness, and the tragic nature of their passing.
The Lear Family and Los Angeles Mayor Karen Bass also paid tribute, acknowledging Reiner's profound impact on American culture and his advocacy for social justice.