An arrest warrant has been issued for a New York doctor indicted on Friday by a Louisiana grand jury for allegedly prescribing abortion pills online to a pregnant minor in the Deep South state, which has one of the strictest near-total abortion bans in the country.

The case opens a new front in the battle between states that ban abortion and states that support providing abortion anywhere in the country.

The case is one of the first direct challenges to shield laws enacted in blue states that protect providers who prescribe abortion pills to out-of-state patients.