A string of swing states critical to tilting the national balance of power toward Democrats or Republicans are among those being scrutinized by the Department of Justice over concerns they may be out of compliance with federal regulations on elections. 

In March, President Donald Trump signed an executive order suggesting the United States lacks election security and ordering, among other things, the enforcement of a prohibition on foreign nationals voting in federal elections. State and local officials suspected of being out of line with the order could be at risk of being prosecuted by the DOJ under the executive action.