Maine’s secretary of state is speaking out against a proposal to change how people vote in the U.S. This comes after an executive order by President Donald Trump to improve election security. The executive order requires proof of citizenship to register to vote in elections and mandates that all ballots be received by Election Day across the country.

President Donald Trump’s sweeping executive order directing major changes to how the US registers voters and counts mail-in ballots was challenged as unconstitutional in separate lawsuits filed by the Democratic National Committee and a slew of nonprofits.