Chris Christie criticizes Biden's response to Nashville shooting with ice cream joke.

Former New Jersey Governor Chris Christie criticized President Joe Biden for making small talk about ice cream and introducing himself as "Dr. Jill Biden's husband" before delivering a formal response to the Nashville school shooting that killed six people. Christie said there's no room for joking in the midst of a tragedy and accused Biden of "playing politics" by calling on Congress to pass an assault weapons ban while people are still grieving.