-
Now Playing: Karl Rove Catches Heat for Hillary Clinton Brain Damage Remarks
-
Now Playing: Bill Clinton on Hillary Brain Damage Claim: 'She Is in Better Shape Than I Am'
-
Now Playing: ABC News Live Prime: Wednesday, March 3, 2021
-
Now Playing: The Rundown: Top headlines today: March 3, 2021
-
Now Playing: By the Numbers: State budgets during COVID
-
Now Playing: Are animals at risk of COVID-19?
-
Now Playing: Teachers, child care staff can sign up for vaccine nationwide
-
Now Playing: Biden calls it a mistake for states to lift COVID-19 restrictions
-
Now Playing: Pennsylvania county paying employees to get vaccine
-
Now Playing: 'Vaccine hunters' helping people sign up to get vaccinated
-
Now Playing: The Breakdown: NY governor not resigning after sexual harassment allegations
-
Now Playing: Huge spike in COVID-19 vaccine availability
-
Now Playing: CDC issues new travel warnings for Ebola virus
-
Now Playing: Should you do anything to prepare your body for the COVID-19 vaccine?
-
Now Playing: Dolly Parton gets COVID-19 vaccine she helped fund
-
Now Playing: Biden says there could be enough vaccine supply for every adult by end of May
-
Now Playing: Biden’s new vaccine timeline
-
Now Playing: Dolly gets her dose
-
Now Playing: Jumping into action
-
Now Playing: ABC News Live Prime: Tuesday, March 2, 2021