It's possible they are clarifying Illegals, for illegals. It sounds as such. Either that or the are asking about Is it legal? Implying is it legal to force vaccinations? Hard to say.
Actually, listening to it again they are saying Measles, on the Measles. So yeah, he's either backtracking or is literally lying to not cause a public panic as again NOT ALL vaccines are junk but some are per Q.