A federal judge struck down a New Hampshire law requiring new voters to produce documentary proof of citizenship because it is unconstitutional, and said that signing a sworn affidavit suffices when registering. File Photo by Matthew Healey/UPI | License Photo

May 29 (UPI) -- A federal judge declared a New Hampshire law that would have required new voters to provide documentary proof of citizenship because it is unconstitutional.

U.S. District Court Judge Samantha Elliott wrote in the ruling, issued on Thursday, that New Hampshire House Bill 1569 would have made it harder for people to register to vote and cast ballots by removing methods for them to do so.

The law would have required all new voters to provide a document proving citizenship, rather than attesting to their citizenship under penalty of perjury on an affidavit.

New Hampshire state law already states that the form filled out and signed when registering qualifies as an affidavit, whether it is filed 30 days before an election or on election day, per state law, Elliott wrote.