Conservative radio host Laura Ingraham on Sunday used the Russian invasion of Crimea to say that the United States should be focusing on stopping undocumented immigrants from coming across its border.

During a Fox News panel discussion on Crimea that included former deputy Pentagon chief Paul Wolfowitz, Ingraham began by blasting the Iraq war, which he helped to orchestrate.

"Upwards or two trillion dollars in Iraq, right? We don't have a lot to show for it," she said. "We are stumbling still in Afghanistan. The American people -- we can talk about, we can do this and we can do that [to stop Russia]. And I understand that, I really do."

"But we have a country right now where people look around and say, why do we only care about borders and sovereignty when they're other countries' borders and sovereignty?" the frequent Fox News guest host added. "Why is it that we're obsessed about that, but in our country, we have a middle class completely flat-lining, we have economic opportunity dwindling?"

Ingraham noted that she had supported the "military adventurism" in Iraq, but people now wanted to know, "Where's the bang for the buck?"

"You can't do this in the rearview mirror," Wolfowitz insisted.

"You got to learn from the past, Paul," Ingraham interrupted.

"One of the things to learn from the past, including the past of the 1930s, is if you don't deter these sort of moves early, when you can do it without military force, you end up in wars," Wolfowitz replied. "And that's what we're trying to avoid here."