The Situation Room with Wolf Blitzer

Trump: I can't tell you when the government will open; Trump: government won't open until we have border wall or fence; Trump talks border in Christmas call to troops; Trump's December: shutdown, investigations, market slide, Syria dust-up; Trump: Democrats oversight could amount to "presidential harassment"; Trump's Christmas wishes coupled with Christmas complaints; Trump: federal workers are with me on the shutdown, border wall; Trump not talking to Democrats as shutdown stretches into 4th day; Pelosi, Schumer: "hard to see" Trump deal that would end shutdown; Trump: Democrats wanted to fire Comey until I did it; Asia markets tank after Christmas Eve plunge on Wall Street; Trump: confident in Mnuchin, but Fed raising rates too fast; Dramatically different Christmas market for president Trump; Trump: Obama had it easier with a lower interest rate; McCaskill campaign ad called some Democrats "crazy"; Senator McCaskill clarifies "crazy Democrats" line; McCaskill talks incoming Representative Alexandria Ocasio-Cortez; McCaskill wishes rising Democrat luck, but warns "rhetoric is cheap, getting results is a lot harder"; Senator McCaskill: Republicans are "keeping their head down"; McCaskill: Trump, Kavanaugh, caravan played role in my defeat; Defense Secretary Mattis sends Christmas message to U.S. troops; Fallen soldier whose parents feuded with Trump honored; O'Rourke helps migrants dropped off by ICE; El Paso Police: immigrants dumped at bus station without warning; Report: ICE to drop off 1,200 more migrants in coming days; Official: Mattis at Pentagon office on Christmas Day; Administration officials: Mattis waited too long to resign; CNN: insiders irked by Mattis's timing, public letter; Flashback: President Kennedy writes letter to child; President Trump and First Lady track Santa's trek; via Knit