Will Anthropic sign the Open Weights and American AI Leadership letter?

Before Jan 1, 2027 If Anthropic officially announces signing of the Open Weights and American AI Leadership letter before Jan 1, 2027, then the market resolves to Yes. The announcement must be made through official company channels including press releases, SEC filings (8-K, 10-K, 10-Q), earnings calls, investor presentations, verified social media accounts, or official statements to media subsequently confirmed by the company. CEO statements through official channels qualify. Rumors, speculati