(Hmm, it looks like the WaPo may have jumped the gun, because more than an hour later they are still yelling about what to do next.)
(Maybe just a bunch of outraged speeches because now the Senate web page says both votes went Schumer’s way and then the impeachment trial was adjourned.)
Schumer declared that the charge was unconstitutional because the House impeachment managers had failed to allege conduct rising to the level of a high crime or misdemeanor, the standard set by Article 2, Section 4 of the Constitution.