New Jersey Gov. Chris Christie bashed his GOP presidential rival Donald Trump for releasing a "simplistic" immigration reform plan.

During an interview with CBS' "Face the Nation," the Republican governor dismissed Trump's immigration policies as too rudimentary to solve such a complex issue in our country.

"In many ways, it's just too simplistic," he told journalist John Dickerson on Sunday.

Christie went on to criticize Trump's plan to build a multibillion dollar wall on the U.S.-Mexico border and end birthright citizenship, which is protected under the U.S. Constitution. Under the 14th Amendment, every child born on American soil is a legal U.S. citizen, regardless of their parent's citizenship.

"You know, the idea of building a wall, kicking everyone out and ending birthright citizenship, all sounds appealing to some folks," Christie said. "But I just think it's a very complicated problem. It needs someone who understands how to do complicated and nuanced solution to the problem."

Christie added that birthright citizenship is "in the Constitution. And I don't think that we should be looking to change it."

"The truth of the matter is that's not something we should be focused on," Christie said. "That's an applause line."

According to most legal experts, changing the practice by amending the Constitution would be nearly impossible, reports CBS News.

"Let's talk about the things we can fix and fix simply without having to amend the Constitution, where we'll need, you know, two-thirds in Congress and 38 states to agree," he added.

Christie went on to say that he understands why Trump's campaign appeals to so many Americans who are frustrated with the nation's immigration policies. He also argued that President Obama's failure to enforce immigration law is driving voters toward the Republican Party.

"I mean, the problem, John, is that people are just absolutely fed up with lawlessness in this country," Christie said. "I think the frustration people feel is to a Congress and a president, this president, who refuses to enforce the law."

Watch Chris Christie's interview below.