A federal judge has permanently blocked the Trump administration from enforcing an executive order that mandated proof of citizenship for voter registration and required mail-in ballots to be received by Election Day. The decision, issued Wednesday by Judge Denise Casper, found that the president lacks the constitutional authority to oversee federal elections.

The ruling is the culmination of a legal challenge initiated last April by a group of state attorneys general who filed a lawsuit in Boston. This lawsuit aimed to prevent the enforcement of the executive order, which was signed the previous year. Judge Casper had previously issued a preliminary injunction blocking the policy last June, and her latest decision makes that injunction permanent.

In her 59-page ruling, Judge Casper stated that the Constitution vests the "executive Power" in the President and commands him to "take Care that the Laws be faithfully executed," but it does not grant specific powers over elections. The judge also rejected the Trump administration's claims of widespread illegal voting, discrimination, fraud, and other errors, finding no evidence to support them.

"There is no evidence in this record of widespread 'illegal voting, discrimination, fraud, and other forms of malfeasance and error' within American elections, which the Executive Order purports to safeguard against," Judge Casper wrote. She further noted that the Department of Justice failed to demonstrate the alleged fraud that purportedly justified the order, and that the policy would have disenfranchised thousands of voters.

This decision represents another setback for the Trump administration's efforts to reshape federal election processes, as courts have previously blocked multiple attempts to impose federal oversight. The administration's challenges have faced significant legal opposition, with various lawsuits questioning other voting-related executive orders.

Among these challenges are multiple lawsuits targeting a second executive order by President Trump that sought to establish a national database of approved voters. Additionally, earlier this week, a judge blocked an attempt to use an immigration database to verify voter rolls. The Department of Justice has also seen its efforts to obtain state voter rolls rejected by judges across the country.

The legal battles highlight ongoing tensions over federal versus state authority in managing elections and voter registration. The administration's arguments for increased federal oversight have been consistently challenged in court, with judges often ruling that such actions exceed presidential authority.

Unresolved questions remain regarding potential further appeals by the administration and the broader impact of these judicial decisions on future executive actions related to election administration. The consistent blocking of these orders by the judiciary suggests a strong judicial precedent against broad federal executive power in election oversight.