new york city mayor elect postponed his inauguration ceremony while the current mayor bill de blasio is offering $100 to new yorkers who come in for a booster shot by the end of the year. the federal government will be offering pop-up testing sites in new york city, trying to shorten the very long lines. yeah, part of the reason those lines stretch around the blocks is you can t find at-home tests basically anywhere. cvs and walgreens are now limiting the number of rapid tests you can buy in stores after a huge surge in demand. in his speech tuesday, president biden pushed back on the notion that testing in the u.s. is a failure right now, trying to reassure vaccinated americans that their holiday plans can go forward while also outlining the next phase of the white house covid response. a belated effort to maximize at-home testing. cnn s jeff zeleny reports from the white house. reporter: christine and laura, three days before christmas, president biden and the white house squar