You are correct about Bush not endorsing Harris:
No, former President George W. Bush did not endorse Kamala Harris for the 2024 presidential election. According to statements from his office, Bush chose not to endorse any candidate in the race, maintaining his stance of staying out of presidential politics. This decision was reported by multiple outlets, including NBC News and USA Today, in September 2024, with his office stating, "President Bush retired from presidential politics years ago." He and his wife, former First Lady Laura Bush, did not plan to publicly share their voting intentions or endorse anyone, consistent with his approach in the 2016 and 2020 elections where he either voted "None of the Above" or wrote in Condoleezza Rice.
While some prominent Republicans from his circle, like his former Vice President Dick Cheney and Cheney's daughter Liz Cheney, endorsed Harris, Bush himself did not. His daughter, Barbara Pierce Bush, also publicly supported Harris and campaigned for her in Pennsylvania, but this did not reflect an endorsement from George W. Bush. Despite pressure from some former aides and speculation on platforms like X, no credible evidence shows he changed his position before or after the election.
Claims suggesting otherwise, such as posts on X hinting at an expected endorsement, lack substantiation from reliable sources and appear to be speculative or incorrect. Bush's consistent pattern of avoiding endorsements in recent elections aligns with his decision here.
911 was an inside job