I heard this on the radio, and I see they have a podcast you can listen to:
WMUR January 16, 2018
CONCORD, N.H. — “Lawmakers in Concord are trying to change a New Hampshire law that allows girls as young as 13 to get married… House members said the current law was written at a very different time.”
I say 30.
Their having trouble figuring out what the new age should be, according to the article.
18, it seems, is too high. They seem to be settling on 16 years old.