Asking for proof of U.S. citizenship in order to cast a vote in a United States election shouldn't be a legal matter by any stretch, but unfortunately, it is.

President Donald Trump recently signed an executive order that would require prospective voters to show proof of U.S. citizenship to cast a vote, and the matter was quickly litigated by -- you guessed it -- Democrats.

According to the Daily Caller, a Clinton-appointed judge actually agreed with plaintiffs in the case that requiring proof of citizenship would hurt the Democratic Party. 

The judge overseeing the case blocked Trump's executive order that would require state officials to receive proof of citizenship for residents to vote, and argued in her ruling that it would hurt voter registration efforts for Democrats.

What did the judge say?

The activist Democratic judge who blocked the executive order, U.S. District Judge Colleen Kollar-Kotelly, wrote in her 120-page ruling "that the Democratic Party showed 'substantial likelihood' that requiring proof of citizenship would hurt their voter registration efforts."

"First, many of the Democratic Party Plaintiffs have organizational standing to challenge this provision based on its effect on their ability to register new voters as members and supporters of the Democratic Party, which they do in service of their mission of electing Democratic candidates to office throughout the country," the judge wrote.

She added, "The [Democratic National Committee], [Democrat Governors Association], [Democratic Senatorial Campaign Committee], and [Democratic Congressional Campaign Committee] have each shown that the implementation of [the executive order] would make it more difficult for them to register voters who are likely to support Democratic candidates, forcing them to divert additional resources toward further voter registration efforts."

The judge also backed the Democrats by arguing that spending more money on resources to check citizenship would take away from other expenditures that would help voter registration efforts.

She's the latest activist judge wielding her power to block executive actions signed by the president.

The Daily Caller noted:

The Democratic National Committee, the League of United Latin American Citizens and National Association for the Advancement of Colored People sued the Trump administration in the D.C. circuit challenging the order, ultimately leading to Kollar-Kotelly’s Thursday ruling.

Trump's thoughts

The executive order was signed by Trump on March 26, and he vowed to make elections fair again.

"We’re going to fix our elections so that our elections are going to be honorable and honest and people leave and they know their vote is counted." the president said. "We are going to have free and fair elections."

He added, "And ideally, we go to paper ballots, same-day voting, proof of citizenship, very big, and voter ID, very simple."

It'll be interesting to see where the case goes, and many expect it will soon reach the Supreme Court for a final ruling.