The decision not to invite observers from the OSCE puts the U.S. alongside Russia and Belarus, while the Justice Department prepares to deploy its own poll monitors.

The Trump administration declined to invite election observers from the Organization for Security and Co-operation in Europe to witness the midterms, blocking monitors from the regional security group for the first time in more than two decades.

Their absence comes as Democrats and election integrity experts have raised concerns about potential election meddling after the Department of Justice announced plans to send its own monitors.

Washington joins only Russia and Belarus in its decision to exclude OSCE observers.