Zev Shalev reports on a historic day President Joe Biden announced he would not seek re-election in 2024, endorsing Vice President Kamala Harris as the Democratic nominee. Biden, 81, made the announcement via a heartfelt letter to Americans, highlighting the administration's achievements including economic advancements, healthcare improvements, and climate legislation. The decision, finalized amid discussions with close aides, marks a significant shift as Biden expressed gratitude for Harris's partnership. Former President Obama praised Biden but did not endorse Harris, sparking speculation. In response, GOP leaders called for Biden's resignation, questioning his fitness to serve. The political landscape shifts dramatically as preparations for the Democratic convention in August continue.