Supreme Court justices privately revealed the leak locked their votes in on the abortion case.
The Supreme Court heard oral arguments on the monumental case, Dobbs v. Jackson Women's Health Organization, in December 2021.
But on May 2, when Politico published a leaked draft opinion in the case, that debate stopped, Biskupic reported.
Supreme Court investigators, after a months-long probe, failed to identify the source of the leak, according to report released in January.
A Supreme Court public information officer did not respond to Insider's request for comment.