An Arizona law targeting illegal immigration had its roots in a business venture proposed by prison companies, according to a report by National Public Radio .

NPR reported Thursday morning that after analyzing hundreds of pages of campaign finance reports, lobbying documents and corporate records, they found a "quiet, behind-the-scenes effort to help draft and pass Arizona Senate Bill 1070 by an industry that stands to benefit from it: the private prison industry."

"The law could send hundreds of thousands of undocumented immigrants to prison, meaning hundreds of millions of dollars in profits to private prison companies responsible for housing them," according to NPR.

The law was proposed by Arizona state Senator Russell Pierce and passed in April. It became law in July, with protests and support.

NPR says Pierce made a presentation in Washington, D.C. last December with a "membership organization of state legislators and powerful corporations and associations, such as the tobacco company Reynolds American Inc., ExxonMobil and the National Rifle Association. Another member is the billion-dollar Corrections Corporation of America — the largest private prison company in the country."

"In the conference room, the group decided they would turn the immigration idea into a model bill. They discussed and debated language. Then, they voted on it," according to NPR.

Puente Arizona responded to the report in an e-mail.

"We call on Russell Pearce to fully disclose his ties with those who may benefit financially from his initiatives and we ask that a deeper investigation be launched into the private interests gaining from the human rights crisis in Arizona," said Carlos Garcia. "The collusive relationship between politicians and corporations is once again brought to light."

Parts of SB1070 have been struck down by a federal judge, and other parts remain under review.

Here is a transcript of the NPR story that will blow your mind!

Last year, two men showed up in Benson, Ariz., a small desert town 60 miles from the Mexico border, offering a deal.

Glenn Nichols, the Benson city manager, remembers the pitch.

"The gentleman that's the main thrust of this thing has a huge turquoise ring on his finger," Nichols said. "He's a great big huge guy and I equated him to a car salesman."

What he was selling was a prison for women and children who were illegal immigrants.

"They talk [about] how positive this was going to be for the community," Nichols said, "the amount of money that we would realize from each prisoner on a daily rate."

But Nichols wasn't buying. He asked them how would they possibly keep a prison full for years — decades even — with illegal immigrants?

"They talked like they didn't have any doubt they could fill it," Nichols said.

That's because prison companies like this one had a plan — a new business model to lock up illegal immigrants. And the plan became Arizona's immigration law.

Behind-The-Scenes Effort To Draft, Pass The Law

The law is being challenged in the courts. But if it's upheld, it requires police to lock up anyone they stop who cannot show proof they entered the country legally.

When it was passed in April, it ignited a fire storm. Protesters chanted about racial profiling. Businesses threatened to boycott the state.

Supporters were equally passionate, calling it a bold positive step to curb illegal immigration.

But while the debate raged, few people were aware of how the law came about.

NPR spent the past several months analyzing hundreds of pages of campaign finance reports, lobbying documents and corporate records. What they show is a quiet, behind-the-scenes effort to help draft and pass Arizona Senate Bill 1070 by an industry that stands to benefit from it: the private prison industry.

The law could send hundreds of thousands of illegal immigrants to prison in a way never done before. And it could mean hundreds of millions of dollars in profits to private prison companies responsible for housing them.

Arizona state Sen. Russell Pearce says the bill was his idea. He says it's not about prisons. It's about what's best for the country.

"Enough is enough," Pearce said in his office, sitting under a banner reading "Let Freedom Reign." "People need to focus on the cost of not enforcing our laws and securing our border. It is the Trojan horse destroying our country and a republic cannot survive as a lawless nation."

But instead of taking his idea to the Arizona statehouse floor, Pearce first took it to a hotel conference room.

It was last December at the Grand Hyatt in Washington, D.C. Inside, there was a meeting of a secretive group called the American Legislative Exchange Council. Insiders call it ALEC.

It's a membership organization of state legislators and powerful corporations and associations, such as the tobacco company Reynolds American Inc., ExxonMobil and the National Rifle Association. Another member is the billion-dollar Corrections Corporation of America — the largest private prison company in the country.

It was there that Pearce's idea took shape.

"I did a presentation," Pearce said. "I went through the facts. I went through the impacts and they said, 'Yeah.'"

Drafting The Bill

The 50 or so people in the room included officials of the Corrections Corporation of America, according to two sources who were there.

Pearce and the Corrections Corporation of America have been coming to these meetings for years. Both have seats on one of several of ALEC's boards.