PHOENIX (AP) The Arizona Legislature on Thursday joined the growing list of Republican-led states to pass aggressive anti-abortion legislation as the conservative U.S. Supreme Court is considering ratcheting back abortion rights that have been in place for nearly 50 years.

The House voted on party lines to outlaw abortion after 15 weeks of pregnancy, mirroring a Mississippi law now being considered by the nations high court.

The bill explicitly says it does not overrule a state law in place for more than 100 years that would ban abortion outright if the Supreme Court overrules Roe v. Wade, the 1973 case that enshrined the right to abortion in law.

The bill now goes to Republican Gov. Doug Ducey, an abortion opponent who has signed every piece of anti-abortion legislation that has reached his desk since he took office in 2015.

Florida lawmakers have passed a similar 15-week abortion ban early this month that Republican Gov. Ron DeSantis is expected to sign. A bill in West Virginia failed to pass the state Senate by the time its legislative session ended earlier this month after passing the House.

An Arizona proposal that would outlaw abortion after about six weeks has not advanced. A bill enacted in Texas last year allows private citizens to enforce the ban, and the Supreme Court refused to block it. Idahos governor signed a copycat bill this week. Those measures are unique in that they allow private citizens to file civil lawsuits against anyone who helps someone else get an abortion after six weeks. It has made legal challenges difficult because the government is not involved in enforcement.

The Arizona 15-week abortion ban bill contains no exceptions for rape or incest or for a medical emergency.

I am becoming more frightened by the moment by this bill, Democratic Rep. Mitzi Epstein said during Thursdays floor debate. Im terrified that this bill would outlaw health care for a woman having a naturally occurring and tragic and horrible miscarriage and they would not be allowed to get this health care.

Republican backers said little during the floor debate.

Minority Democrats have said the measure is unconstitutional and that any ban would disproportionally impact poor and minority women who wont be able to travel to states without strict abortion laws.

But Sen. Nancy Barto, the Republican sponsor of the bill, has said she hopes the high court upholds Mississippis law banning abortion after 15 weeks.

The state has an obligation to protect life, and that is what this bill is about, Barto said during Senate debate last month.

The debate and vote on the 15-week abortion ban came the same morning that the House also debated a ban on transgender girls from playing on the high school or college sports team that aligns with their gender identity. The House voted Thursday to pass a bill banning gender reassignment surgery for anyone younger than 18.

Arizona already has some of the nations most restrictive abortion laws, including one that would automatically outlaw it if the high court fully overturns Roe.

Republicans hope to put the 15-week ban in place so it takes effect quickly if the Supreme Court further limits abortion rights but stops short of fully overturning Roe. The measure closely mirrors the Mississippi law.

Under current abortion rulings, abortion is legal until the point a fetus can survive outside the womb, which is usually around 24 weeks.

Bartos bill would make it a crime for a doctor to perform an abortion after 15 weeks but would prohibit the prosecution of pregnant people for receiving one. Doctors could face felony charges and lose their license to practice medicine. There is an exception for cases when the mother is at risk of death or serious permanent injury, but not for instances of rape or incest.

Of the 13,186 abortions performed in Arizona in 2020, 636 were after 15 weeks of pregnancy, according to the latest data from the Arizona Department of Health Services .