The US Department of Homeland Security has upgraded the US voting and election infrastructure as a subsector of the nation’s critical infrastructure. The designation does not mean this system will now come under federal control. This designation changes nothing and each state and local government body will keep the same level of control over the electoral process. The promotion to a critical infrastructure subsector means that state and private agencies and organizations involved in the US election process will be a priority within the National Infrastructure Protection Plan. US election agencies will also be able to access classified data about cyber-attacks.
Source: https://www.bleepingcomputer.com/news/government/dhs-designates-us-voting-system-as-critical-infrastructure-/