Two other top staffers have left the EAC in recent months as well.

Sen. Elizabeth Warren, who is running for president in 2020, wants to replace outdated voting systems with voter-verified paper ballot machines, mandate voting equipment be paid for by the federal government, and require risk-limiting audits before elections take place.

The bill covers a lot, and includes a number of election security measures that were proposed and failed in 2018.

In a response letter obtained by CyberScoop, EAC commissioners lay out the many ways the commission works with states on election security.

Lawmakers ratcheted up the pressure on election technology vendors to be more responsive to federal officials. The companies said they're being as transparent as possible.

The government is currently planning a cybersecurity program that would allow federally funded national scientific laboratories to privately probe and then document security flaws existing in U.S. election technology, most of which is developed and sold by private companies, according to a senior U.S. official.