Ryan rejects Trump proposal to eliminate birthright citizenship

House Speaker Paul RyanPaul Davis RyanPaul Ryan says Trump will win reelection because of 'record of accomplishment' Pence loses House office space Dem budget chair: Trump 2020 proposal 'cruel-hearted' MORE (R-Wis.) on Tuesday rejected President TrumpDonald John TrumpJoint Chiefs chairman denies report that US is planning to keep 1K troops in Syria Kansas Department of Transportation calls Trump 'delusional communist' on Twitter Trump has privately voiced skepticism about driverless cars: report MORE's stated push to eliminate birthright citizenship via executive order.

"Well, you obviously cannot do that. You cannot end birthright citizenship with an executive order," Ryan told Lexington, Ky., radio station WVLK. "We didn’t like it when Obama tried changing immigration laws via executive action, and obviously as conservatives, we believe in the Constitution."

Ryan, who is retiring at the end of his term, said an executive order would not adhere to the 14th Amendment, adding that he thinks there is a better way to address the country's "unchecked illegal immigration."

“I think the smarter, faster solution here is to crack down on illegal immigration and obliviously support doing that,” he said. "But I'm a believer in the Constitution, I believe in interpreting the Constitution as written, and that means you can't so something like this via executive order."

Ryan's comments follow hours after Trump said in a new interview with Axios that he plans to draft an executive order that would terminate birthright citizenship for children of noncitizens who are born in the United States.

Trump asserted that he does not believe he needs congressional approval to make the change, sparking bipartisan backlash.

“You can definitely do it with an act of Congress. But now they’re saying I can do it just with an executive order,” he said before stating incorrectly: "We're the only country in the world where a person comes in and has a baby, and the baby is essentially a citizen of the United States ... with all of those benefits."

The United States and Canada are two of the only developed countries in the West to have birthright citizenship. Most Central and South American nations also have birthright citizenship.

House Minority Leader Nancy PelosiNancy Patricia D'Alesandro PelosiMulvaney: Military projects impacted by wall funding haven't been decided yet Left-wing Dems in minority with new approach to spending Julian Castro hints at brother Joaquin's Senate run MORE blasted the president's proposal, stating that Trump is trying to divert attention from other issues ahead of next week's midterm elections.

“The President does not have the power to erase parts of the Constitution, but he and the GOP Congress have spent two years trying to erase protections for people with pre-existing conditions," she said in a statement.

“Clearly, Republicans will do absolutely anything to divert attention away from their votes to take away Americans’ health care.”

Sen. Chuck GrassleyCharles (Chuck) Ernest GrassleyKlobuchar: ObamaCare a 'missed opportunity' to address drug costs Just one in five expect savings from Trump tax law: poll Divisions emerge over House drug price bills MORE (R-Iowa) said Tuesday that he believes it would take a constitutional amendment to change birthright citizenship.

"I am not a lawyer but it seems to me it would take a constitutional amendment to change that as opposed to an executive order," Grassley told an Iowa CBS station.

—Updated at 2:48 p.m.