TAPPER: And we're back with our "TECH LEAD" and a potential bursting of the bitcoin bubble. Bitcoin is a virtual currency, meaning it only exists online. Its value has dropped about 30 percent in a week, but if you had played bitcoin right, you could be rich. Imagine it's Christmas, 2012. You gift yourself $1,000 worth of bitcoin. If you had sold it on Saturday, you would have made more than $1.4 million, but if you invested that $1.4 million on Saturday and sold it today, well, you'd be down more than $400,000. Everyone understand now? We end today with the "MONEY LEAD" and a famous pizza chain suddenly orphaned. John Schnatter, the Founder, and Papa of Papa John's Pizza is stepping down as the company's CEO. The announcement comes after Schnatter sparked controversy by saying protests by NFL players were hurting his pizza sales. After white supremacists talked about naming Papa John's their official pizza, the company had to backtrack by apologizing to people who found the comment divisive and tweeting a middle finger at "neo-Nazis." Schnatter will be out January 1st but he will remain Chairman of the Board. Tune in this Sunday morning to CNN's "STATE OF THE UNION." My guest will be Senator Bernie Sanders fresh. We'll talk to him about tax reform and 2018. It all starts at 9:00 a.m. and noon Eastern on Sunday. Also be sure to follow me on Facebook and Twitter @JAKETAPPER or you can tweet the show @THELEADCNN. That is it for THE LEAD. I turn you over to Wolf Blitzer in "THE SITUATION ROOM." If I don't see you before then Merry Christmas. Otherwise, I'll see you Sunday morning.
Bitcoin Plunges, Loses 30 Percent Of Its Value In A Week; Papa John's Founder Stepping Down As CEO.