Abraham Lincoln would have replaced Supreme Court Justice Taney who died in 1864 just weeks before the election (closer than RBG), but Lincoln could not because Congress had already adjourned. He did so very the day they re-convened. So even Schumer's assertions don't hold up to historical scrutiny. The Constitution determines what's legitimate not Chuck Schumer's whim.
Abraham Lincoln would have replaced Supreme Court Justice Taney who died in 1864 just weeks before the election (closer than RBG), but Lincoln could not because Congress had already adjourned. He did so very the day they re-convened. So even Schumer's assertions don't hold up to historical scrutiny. The Constitution determines what's legitimate not Chuck Schumer's whim.