evidence: Courts recently have tossed lawsuits challenging expired COVID-19 rules. A panel on the 9th Circuit Court of Appeals restored a case against the Los Angeles Unified School District, allowing employees to sue to prevent future vaccine mandates. [...] Even though Los Angeles Unified dropped its COVID vaccine mandate for school staff almost a year ago, a lawsuit accusing the district of violating workers’ rights can still move forward, the U.S. 9th Circuit Court of Appeals ruled on Friday. The 2-1 ruling by a pair of federal judges appointed by former President Donald Trump revives a case that a lower court had dismissed. It also counters recent rulings by courts — including the 9th Circuit — that tossed lawsuits challenging expired COVID-19 rules on the grounds that the policies were no longer in effect.