Civil rights groups on Friday appealed last week’s federal court decision that said states can require proof of citizenship on their voter registration forms — a ruling the activist groups said runs counter to Supreme Court precedent.

The judge had ruled that the federal Election Assistance Commission couldn’t refuse requests by Kansas and Arizona that registration cards distributed in their states include proof of citizenship requirements.

But the activists said that imposes an illegal burden on would-be voters.

“The EAC has the authority to reject the states’ unproven claims and unreasonable request to require more paperwork from eligible Americans who want to vote,” said Sam Wercinski, executive director of the Arizona Advocacy Network.”

Last week’s ruling, by Judge Eric F. Melgren, was viewed as a major boost for states’ rights and a setback for President Obama and other allies who’d fought against stiffer checks.