Republican Sens. Marco Rubio, John McCain and Lindsey Graham headlined a much publicized bipartisan legislative framework on Immigration reform announced by eight senators Monday.

The announcement was met by news that the House was working on a similar bipartisan bill which House Speaker John Boehner is confident will amount to a deal soon. The framework would address border security, guest worker and employer verification, and include a path to citizenship for the 11 million illegal immigrants already in this country.

While the news came to many as a sign of hope for at least temporary camaraderie and effective policy from a divisive Capitol, many conservatives are asking to the see the details before patting one another on the back.

During an appearance on the Laura Ingraham radio show Wednesday, Republican Louisiana Sen. David Vitter expressed some skepticism towards his colleague Marco Rubio’s approach to the issue of Immigration reform.

“Look, I love and respect Marco,” Vitter said. “I just think he’s amazingly naïve on this issue. This is the same old formula we’ve dealt with before, including when it passed in 1986 and that is promise of enforcement and immediate amnesty. And of course, the promises of enforcement never materialize. The amnesty happens immediately, the millisecond the bill is signed into law. And the same is true here.”

“As soon as you give them a legal status, they are here legally forever and probably they’re citizens pretty darn soon after,” Vitter went on to say. “And if Marco thinks no matter what happens or doesn’t happen on the enforcement side that’s not going to happen, I just think he’s nuts.”

Rubio is expected to be the key in selling the ‘Gang of Eight’ proposal to more conservative Republicans. Following Vitter’s remarks Wednesday, a source close to Rubio jabbed back at the Louisiana Senator, emailing POLITICO that “David Vitter has done some nuttier things in life.”

Vitter appeared on ‘Wilkow!‘ Thursday to discuss his comments about Rubio and his positions on Immigration reform.

“I very much like and respect Marco, I just think he’s dead wrong on this,” Vitter said Thursday. “To me this is the same old, same old model. It’s a promise of enforcement with an immediate amnesty.”

Vitter went on to compare the ‘Gang of Eight’ proposal with the failings of the Immigration Reform and Control Act of 1986.

“It didn’t solve the problem, it quadrupled the problem,” Vitter said. “What were 3 million illegal aliens in our country then, grew to 11 or 12 million today.

“That’s the simple question that I have, what’s different? What’s going to prevent that from happening again?”

Watch a clip of Vitter’s interview on TheBlaze TV below: