Oklahoma's Republican governor, Kevin Stitt, signed into law the country's most restrictive abortion measure last Wednesday, banning nearly all abortions in the state.

House Bill 4327 took effect immediately, even as Roe v. Wade, the 1973 Supreme Court decision enshrining abortion access, remains the law of the land. It's a so-called vigilante law that empowers private citizens to sue anyone who "aids or abets" an abortion — whether that's doctors, friends, or family members — for up to $10,000 in damages. A law piloting that enforcement mechanism has been in effect in Texas since last fall.