Which US president was made an honorary CB?

Ronald Reagan was made an honorary Seabee, recognizing his support for the naval construction battalion and the significant impact that the Seabees have had on military operations and infrastructure development. His presidency was marked by an emphasis on strengthening the military, and the recognition as an honorary CB reflects the appreciation for his contributions to the defense community and the values embodied by the Seabees. The Seabees are known for their "Can Do" spirit, and Reagan's leadership was closely aligned with that ethos, emphasizing resilience, construction capability, and service to the nation.

The other presidents listed did not receive this honor, as their contributions were acknowledged in different contexts, but not specifically through the Seabee honorific designation. Each has had their own distinct relationship with the military and veteran affairs, but Reagan's alignment with the Seabees in terms of support and admiration is what solidified his honorary status.