A federal judge in the Eastern District of California has blocked Nexstar Media Group’s proposed acquisition of Tegna while antitrust litigation proceeds, handing opponents of the deal an important early win and underscoring how merger challenges can survive even after federal regulators decline to stop a transaction.

Judge Troy Nunley found that the challengers were likely to succeed, a significant conclusion at the preliminary injunction stage.

Litigation over mifepristone is poised to remain one of the most closely watched legal battlegrounds of 2026, with challenges unfolding across multiple fronts at once: federal agency authority, state abortion restrictions, drug distribution rules, and preemption.