Pres-elect Biden will invoke the Defense Production Act to boost Covid vaccine production. About 2.1 million people have received the vaccine & despite delays in reported data, it's far below the goal of vaccinating 20 million before month's end. CNBC’s Ylan Mui breaks down the latest activity in Washington, D.C., over Covid-19 stimulus checks. And CNBC’s Steve Liesman runs through how economists feel about the $900 billion relief bill that President Donald Trump just signed. The George runoff is entering its final stage. The winner will decide who controls the Senate. Plus, the year ahead in tech and a record number of holiday returns.