The ad is misleading. Candidates were asked whether their health care plans would cover immigrants here illegally.
They were not, however, directly asked if that coverage would be free.
[...]
Guthrie: "A lot of you have been talking tonight about these government health care plans that you proposed in one form or another. This is a show of hands question. And hold them up for a moment so people can see. Raise your hand if — if your government plan would provide coverage for undocumented immigrants."
All candidates on stage raised their hands.
Guthrie then asked Buttigieg to support his affirmative answer.
Buttigieg: "Our country is healthier when everybody is healthier.
And remember, we’re talking about something people are getting a — given a chance to buy into. In the same way that there are undocumented immigrants in my community who pay, they pay sales taxes, they pay property taxes directly or indirectly.
This is not about a handout. This is an insurance program. And we do ourselves no favor by having 11 million undocumented people in our country be unable to access health care."
Fact-checking Trump ad on Democrats, health care for immigrants illegally in the country | PolitiFact