Updated 2:05 p.m. with comment from Nixon.
Updated 4:19 p.m. with comment from Planned Parenthood and Rep. Tim Jones.
Mo. Gov. Jay Nixon says he will let a controversial measure that puts further restrictions on abortions performed after 20 weeks become law without his signature.
The state already bans late-term abortions unless the life or health of the mother is in danger. That includes mental health.