I've included the transcript below, but words can't accurately describe the tone of voice or the body language of Grassley in the actual video, so I'll just urge everyone to watch it.
WOMAN: "What is your plan to keep millions of Americans like myself covered? Those of us with pre-existing conditions, people who are on their parents insurance, and again, people like myself who need life-guaranteeing medication? We could lose our insurance and I'd probably be dead in 2 months."
GRASSLEY: "Well, there's a...there's a lot of, uh...and she's asking only because the courts may declare [the ACA] unconstitutional. Now, I don't think that the courts are going to declare it unconstitutional..."
WOMAN: "You voted seven times to repeal it."
GRASSLEY: (pause) "Yes."
WOMAN: "Why? What are you going to do for people on the ACA?"