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Republican presidential front-runner Donald Trump has repeatedly said that not only will he build a wall between the U.S. and Mexico, he will make Mexico pay for it.

So how would Trump compel Mexico to pay?

According to a two-page memorandum his campaign sent to The Washington Post, he will threaten to cut off the flow of billions of dollars in payments that immigrants send home to the country.

On "America's Newsroom," Trump campaign Arizona chairman Jeff DeWit explained that Trump would limit money transfers from the U.S. to Mexico by enforcing the "know your customer" provision of the Patriot Act.

If someone can't provide documentation proving lawful presence in the United States, they can't send money out, DeWit said, noting that would stop the flow of billions of dollars per year from the U.S. to Mexico.

"This can happen, so the argument's going to shift very quickly to 'should this happen?'" DeWit said, adding that other proposals outlined in the memo include increased trade tariffs, cancelation of visas and higher fees for border crossing cards.

"Basically, American workers are looking for a president that's going to put America first. And Donald Trump is the only presidential candidate that's saying he's going to do that."

Watch the segment above.

UPDATE, 12:55pm ET: President Obama just responded to a question about Trump's plan after making remarks on corporate inversion.

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