That wikipedia article is kind of thinly sourced. The 2017 version of SB 273 just flatly outlawed marriage between two 17-year-old people. I can see why the ACLU objected. It does, in fact, intrude on civil liberties. The later revision that was enacted is here: https://legiscan.com/CA/text/SB273/id/1820759

I tried to find out why Planned Parenthood opposed it and the original article is terrible:

https://www.sfchronicle.com/bayarea/article/Effort-to-bar-ju...

No specific mention of why. I couldn't find a statement from Planned Parenthood in my limited search.

I found a publication "Child Marriage in the United States" by Lauren Fox" (https://scholarship.shu.edu/student_scholarship/966/) that says this:

> Planned Parenthood opposes banning child marriage because it believes that an age requirement would be a burden on a minor’s right to consent in other circumstances (particularly to consent to an abortion).

Seems plausible, but the article it references seems to make no specific reference to planned Parenthood: http://www.sacbee.com/news/politics-government/capitol-alert...

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