Texas has sued a New York doctor for prescribing abortion pills to a woman near Dallas, launching one of the first challenges in the US to shield laws that Democrat-controlled states passed to protect physicians after Roe v. Wade was overturned.

Texas Attorney General Ken Paxton filed the lawsuit on Thursday in Collin County, and it was announced Friday.

Such prescriptions, made online and over the phone, are a key reason that the number of abortions has increased across the US even since state bans started taking effect. Most abortions in the US involve pills rather than procedures.

Mary Ruth Ziegler, a law professor at the University of California, Davis, School of Law, said a challenge to shield laws, which blue states started adopting in 2023, has been anticipated.

And it could have a chilling effect on prescriptions.

“Will doctors be more afraid to mail pills into Texas, even if they might be protected by shield laws because they don’t know if they’re protected by shield laws?” […]