I’m actually surprised this is on today. I though Schumer was going to bury it. But no, Rep Mark Green is delivering the articles of impeachment, reading them to the senate.
Schumer wants to use a Senate motion to dismiss. It's unheard of; the Constitution requires a trial in the Senate.
Even before Schumer can make a motion to dismiss, the Senate must first choose someone to preside over the trial, most likely the President pro tempore Patty Murray (D-WA).
Then they have to adopt the rules for the trial, most likely the same rules that have been used in the prior impeachment trial. I don't think those rules included a motion to dismiss. The Senate rules for the Clinton impeachment trial included a motion to dismiss, but it wasn't used.
-PJ