Texas lawmakers on Wednesday approved letting private citizens sue abortion pill manufacturers, doctors and anyone who mails the medication, setting the state up to be the first to try to crack down on the most common abortion method.

The law would be the first of its kind in the U.S. and add another layer of abortion restrictions in Texas, which has some of the toughest in the country and already bans nearly all abortions.

The bill now goes to Republican Gov. Greg Abbott, an abortion opponent who is expected to sign it into law. It would take effect in December, though it is nearly certain to spark legal challenges from abortion rights supporters.

Supporters of the proposal, which passed a final vote in the GOP-controlled Texas Senate, call it a key tool to enforce the state's ban and protect women and fetuses. Opponents see it as not only another way to rein in abortion but intimidate providers outside Texas who are complying with the laws in their states. They also say it would encourage a form of vigilantism.

Under the measure, Texas residents could sue those who manufacture, transport or provide abortion-inducing drugs to anyone in Texas for up to $100,000. Women who receive the pills for their own use would not be liable.

Under the bill, providers could be ordered to pay $100,000. But only the pregnant woman, the man who impregnated her or other close relatives could collect the entire amount. Anyone else who sues could receive only $10,000, with the remaining $90,000 going to charity.

Lawmakers also added language to address worries that women would be turned in for seeking to end pregnancies by men who raped them or abusive partners. For instance, a man who impregnated a woman through sexual assault would not be eligible.