Sen. Marco RubioMarco Antonio RubioSenate GOP campaign arm outraises Democratic counterpart in September House passes bills to secure telecommunications infrastructure Senators call for answers from US firm over reported use of forced Uyghur labor in China MORE (R-Fla.) on Tuesday criticized a Heritage Foundation study on the immigration reform legislation introduced in the Senate, calling the think tank's report "flawed."


"Their argument is based on a single premise, which I think is flawed," Rubio said, according to the Tampa Bay Times. "That is these people are disproportionately poor because they have no education, and they will be poor for the rest of their lives in the U.S. Quite frankly that’s not the immigration experience in the U.S. That’s certainly not my family’s experience in the U.S. The folks described in that report are my family. My mother and dad didn’t graduate high school, and I would not say they were a burden on the United States."

The conservative think tank's study, released Monday, estimated that the immigration reform proposal would cost taxpayers $6.3 trillion over the next few decades. The Heritage Foundation says the immigration proposal offers amnesty to immigrants living in the country illegally.

A number of pro-immigration lawmakers and groups criticized the study. But Rubio, seen as a leader in the Republican Party on immigration, was noticeably silent on Monday.

Rubio also said that the study made some good points.

"We do want to address welfare benefits in the United States, the structure of the entitlement programs," Rubio continued. "But that’s not just true for immigrants; that’s true for everybody. ... I think the report, as much as anything else, is an argument for welfare reform and entitlement reform. Not necessarily an anti-illegal immigration reform study."

The Heritage Foundation released a statement Tuesday afternoon saying the think tank was still willing to work with Rubio.

"Heritage has worked with Sen. Rubio on numerous issues and we admire him. He is right: Our study is 'an argument for welfare reform and entitlement reform.' He cannot pretend, however, that this already herculean task will be made easier after we have added millions of new people to a failing entitlement system. The time to fix it is now. We are ready to work with him and any man and woman of either party who realizes the urgency of our plight."

Other members of the group of senators that introduced the immigration proposal also weighed in on the Heritage study. Sen. Jeff FlakeJeffrey (Jeff) Lane FlakeFlake donating unused campaign funds to Arizona nonprofit focused on elections: report Biden nominates former Sen. Tom Udall as New Zealand ambassador Biden to nominate Jane Hartley as UK ambassador: report MORE (R-Ariz.) said the study completely ignored the "economic benefits" of the immigration proposal.

"New Heritage study claims huge cost for Immigration Reform," Flake wrote on his Twitter account. "Ignores economic benefits. No dynamic scoring."

Later Tuesday, Rubio met privately with conservative groups and think tanks in his Senate office to hear out their concerns about the immigration bill.

Attendees at the meeting included representatives from the American Enterprise Institute, the Manhattan Institute, the Leadership Institute, the Council on Foreign Relations, and the CATO Institute. Representatives from other conservative organizations were on hand as well, including the American Action Network, Americans for Tax Reform, Tea Party.Net, and American Crossroads.

Grover Norquist, president of Americans for Tax Reform, said border security was a big topic at the meeting.

"Here's what came up that we kept hearing: ‘We don't believe that the this administration will enforce any of the rules you have for tougher border security,’” Norquist said.

Here's the full list of attendees at the Rubio event, according to a person who attended:

Al Cardenas, American Conservative Union

Sal Russo of Tea Party.Net

Diana Furchtgott-Roth of the Manhattan Institute

Ken Weinstein, Hudson Institute

Alex Nowrasteh, CATO Institute

Barrett Duke, Southern Baptist Convention

Morton Blackwell, The Leadership Institute

Niger Innis, Tea Party.Net

Todd Cefaratti, Tea Party.Net

Grover Norquist, ATR

James Pethokoukis, American Enterprise Institute

Elliott Abrams, Council on Foreign Relations

Paul Wolfowitz, American Enterprise Institute

Steven Law, American Crossroads

Douglas Holtz-Eakin, American Action Network

Norm Coleman, American Action Network

John Shadegg, who is a Visiting Distinguished Fellow at the Heritage Foundation.