Now Playing: News headlines today: Feb. 11, 2019

Now Playing: News headlines today: Feb. 12, 2019

Now Playing: Unvaccinated teen sparks larger discussion after seeking answers online

Now Playing: Teen who urged boyfriend to commit suicide in jail

Now Playing: Outrage after Cleveland Browns sign player seen assaulting woman

Now Playing: IRS responds to outrage over smaller tax refunds

Now Playing: Denver teachers strike enters Day 2

Now Playing: Texas two-step: Donald Trump, Beto O’Rourke hold dueling rallies

Now Playing: Negotiators reach agreement ‘in principle’ to avoid another shutdown

Now Playing: Difficult commuter conditions along East Coast

Now Playing: Pacific Northwest battles record snowstorm

Now Playing: It’s Morning, America: Tuesday, Feb. 12, 2019

Now Playing: Where and when the latest winter blast will strike

Now Playing: After defying anti-vaxx mom, teen explains why he got vaccinated

Now Playing: New Hampshire man watches house burn down on security app

Now Playing: Baby found in the middle of California road with umbilical cord still attached

Now Playing: World War II veteran celebrates 100th birthday

Now Playing: Woman gets 15 months in prison for urging man to kill himself

Now Playing: Trump: Fate of looming Friday shutdown ‘up to the Democrats’

Now Playing: Accused Russian agent Maria Butina speaks out for first time