But if voting machine security standards don't change by the 2020 presidential election, Sen. Ron Wyden warns, the consequences could be far worse than the cyberattacks in 2016.

The Democrat from Oregon, who is a member of the Senate Intelligence committee, told the Defcon hacking conference that US voting infrastructure was failing to keep elections secure from potential cyberattacks.

Wyden had proposed an election security bill requiring paper ballots in 2018.

A House bill passed ,but was blocked in the Senate by Mitch McConnell, the majority leader.

McConnell, a Republican from Kentucky, called it partisan legislation.

On Friday, Wyden blasted McConnell, calling him the reason why Congress hasn't been able to fix election security issues.