Biden signs $1.9 trillion stimulus bill, making $1,400 checks and child tax credit official

In today's top tech stories, Biden signs the $1.9 trillion stimulus bill, which delivers a third round of stimulus checks that will start going out this weekend. In other news, Verizon invests $52.9B in midband spectrum for 5G expansion. And finally, NASA is gearing up for a second try at a critical hot-fire test of its Space Launch System on the Artemis moon rocket, because the first attempt didn't go as planned.