Dario Amodei was reportedly weird and hard to deal with during the negotiations between the White House and Anthropic. Talks are now on track now that his role in the discussions has been replaced by Tom Brown, another Anthropic co-founder. Brown's manner is warmer and more traditionally personable. He is working on the talks alongside Sarah Heck, Anthropic's Head of Public Policy, who is quite disciplined and cautious but comes across as enthusiastic and on-message.