President Barack Obama and Republican presidential candidate Ben Carson have something in common: opposing Donald Trump's mass deportation plan.

During an interview on Thursday, Obama criticized Trump's proposal to deport all undocumented immigrants living in the U.S. Trump has said he would "humanely" deport all 11 million immigrants.

"The notion that we're gonna deport 11, 12 million people from this country -- first of all, I have no idea where Mr. Trump thinks the money's gonna come from," Obama told ABC News's George Stephanopoulos. "It would cost us hundreds of billions of dollars to execute that."

"Imagine the images on the screen flashed around the world as we were dragging parents away from their children, and putting them in what, detention centers, and then systematically sending them out. Nobody thinks that that is realistic. But more importantly, that's not who we are as Americans," Obama added.

Progressive and conservative groups have estimated Trump's mass deportation plan would cost the U.S. hundreds of billions of dollars. The Center for American Progress (CAP) estimated the plan would cost $10,070 per person, which totals to $114 billion for the 11.3 million immigrants. The American Action Forum (AAF), a center-right policy institute organization, estimated between $419.6 billion and $619.4 billion in a span of 20 years.

Carson also criticized Trump's plan, noting the effects on several employment industries if all undocumented immigrants were deported.

"The people that are here, the 11.5 million people here, rounding them up and deporting them may sound good to some people," Carson told the Examiner. "But it's not pragmatic. It also affects the farming industry, the hospitality industry. So, you know, we have to be pragmatic as a nation. There's no reason that they should have to live in the shadows."

Trump was also confronted about his deportation plan during Tuesday night's fourth Republican presidential primary debate. Ohio Gov. John Kasich said there has to be consideration for the families and children that may be affected from the plan. Former Florida Gov. Jeb Bush said the plan is "not embracing American values" and not possible.

"For the 11 million people ... we all know you can't pick them up and ship them back across the border. It's a silly argument," said Kasich on Tuesday, adding the undocumented immigrant population may have their opportunities if they are law abiding and pay a penalty.

"It (Trump's plan) would tear communities apart, and even having this conversation sends a powerful signal. They're doing high-fives in the Clinton campaign when they hear this ... the way you win the presidency is you have practical plans, said Bush, who proposes a pathway to legal status, not citizenship, for immigrants.

Trump defended his plan, stating it is not fair for the current immigrant populations that have already been working to achieve legal status.

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For the latest updates, follow Latin Post's Politics Editor Michael Oleaga on Twitter: @EditorMikeO or contact via email: m.oleaga@latinpost.com.