Federal immigration could change forever under President Trump. The White House is expected to end Deferred Action for Childhood Arrival, the controversial DACA program that has given temporary legal reprieve to hundreds of thousands of illegal immigrants and has given conservatives fits since Obama bypassed Congress to start it in 2012.

But Judge Roy Moore doesn't know what that means. The former state Supreme Court justice and current front-runner in the special Alabama Senate primary appeared completely unclear on the concept during a July 11th local radio interview. [You can listen below with the exchange starting at 12:25]

Asked by WVNN's radio host Dale Jackson about Trump's push to end DACA protection for so-called Dreamers, a confused Moore responded "Pardon? The Dreamer program?"

JACKSON: "Yes, sir, the DACA/DAPA. You're not aware of what Dreamers are?"

MOORE: "No."

JACKSON: "This is a big issue in the immigration debate …"

MOORE: "Why don't you tell me what it is Dale and quit beating around and tell me what it is."

JACKSON: "I'm in the process of doing that Judge Moore."

MOORE: "OK."

It was the most cringe-worthy gaffe since Gary Johnson's "And what is Aleppo?"

After a lengthy explanation about how Obama created the program by executive order, Moore was indifferent at best and completely confused at worst.

The candidate first erroneously expressed gratitude that Congress has "already taken that up." And then ended the broadcast by promising that, if elected, "I would look at that program. I surely would. I think it needs to be looked at." It's not immediately clear if Moore even supports Trump's campaign promise to end the program.

Though most polls have Moore ahead of incumbent Sen. Luther Strange with a big lead ahead of the Sept. 26 Republican runoff, Moore is going to have to make up that knowledge gap. Of the almost 750,000 so called-dreamers in the United States, according to one estimate, at least 4,000 reside in Alabama.

Moore doesn't have much time to get fast. The runoff against Strange is just 25 days away.

Philip Wegmann is a commentary writer for the Washington Examiner.