The Arizona bill, (HB 2036), passed in thestate Senate on Thursday and will now go before the house. Like the proposals before it, Arizona’s legislation is modeled on the “Pain-Capable Unborn Child Protection Act” designed by the National Right to Life Committee. And like the other bills, it states that abortion would be banned 20 weeks into a pregnancy. But reproductive rights advocates point out that Arizona’s law would actually be more restrictive than others, as the bill states that the gestational age of the fetus should be “calculated from the first day of the last menstrual period of the pregnant woman.”