US District Judge James Teilborg ruled on Monday that the law doesn't impose substantial limits on abortions and that the state showed a legitimate interest in imposing the limits.
The ban is to take effect Thursday. It prohibits abortions starting at 20 weeks of pregnancy except in medical emergencies. That's a change from the current ban at viability, which is the ability to survive outside the womb and which is about 24 weeks.
Teilborg held a hearing Wednesday on a request from abortion-rights groups that he temporarily block enforcement. Arizona is among 10 states that have enacted types of 20-week bans. Republican Governor Jan Brewer signed the measure into law in April.
Phoenix: A federal judge is allowing Arizona's new ban on abortions starting at 20 weeks of pregnancy to take effect.
First Published: Tuesday, July 31, 2012, 11:01