Comanche County v. Lewis was a Supreme Court case that was decided in 2020. The case involved a dispute between Comanche County, Oklahoma and the estate of a deceased man, Lewis. The dispute centered around the county's attempt to collect unpaid taxes from Lewis' estate. The county argued that the estate was liable for the unpaid taxes, while the estate argued that the taxes were not due because the county had failed to properly assess the taxes. The Supreme Court ultimately sided with the estate, ruling that the county had failed to properly assess the taxes and that the estate was not liable for the unpaid taxes. The Court held that the county had failed to provide sufficient notice of the assessment and had failed to provide an opportunity for the estate to contest the assessment. The Court also held that the county had failed to provide sufficient evidence to support its assessment. As a result, the Court ruled that the estate was not liable for the unpaid taxes.

In Comanche County v. Lewis, the Supreme Court of Oklahoma held that a county was not liable for damages caused by an employee’s negligence in operating a motor vehicle while on official business. The dissenting opinion argued that the county should be held responsible for its employees' actions because it had control over them and their activities. The dissent further noted that if the county were to escape liability, then it would have no incentive to exercise due care when hiring or supervising its employees. Furthermore, allowing counties to avoid responsibility could lead to dangerous situations where public servants are allowed free reign without any accountability or oversight from their employers. Ultimately, the dissent concluded that holding counties accountable for negligent acts committed by their employees is necessary in order ensure safety and justice within society as well as promote good governance practices among local governments.