Judge Andrew Napolitano said Monday that President Trump's calls for the deportations of illegal immigrants without proper court hearings goes completely against the Constitution.

Trump tweeted that "people must simply be stopped at the border" and children should be turned back to their home countries.

He added that doing so would stop illegal immigration "in its tracks."

Napolitano, a Fox News senior judicial analyst, said that due process has been an American procedure for hundreds of years, without exception.

"Once these persons -- no matter their age and no matter how they got here -- are on American soil, they're entitled to due process protection," he said on "America's Newsroom."

He added that it's the job of the government to afford due process to migrants at the border.

"If you can deny people due process because of an immutable characteristic of birth, where they were born, then the Constitution's guarantees are meaningless," he said.

Napolitano said he doesn't believe that there is any legal support for what Trump is asking for, explaining that there must be hearings. He said judges could be transferred from other states to the border areas so expedite the process and clear the backlog of cases.

"As painful and as expensive as it is, the government is going to have to go through it," he said. "Because the process must be fair and must be perceived as fair. That's the essence of what the Constitution requires."

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