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Sen. Rob Portman (R-Ohio) said he and his GOP colleagues are more united on tax reform than they were on repealing ObamaCare.

Portman said he and the rest of the Republican senators will soon meet as a whole to discuss their proposal.

He said there is a lot more unity than there was within the caucus on ObamaCare repeal-and-replace.

"[We have] a common goal... middle class tax cuts and getting this economy moving," he said. "It's great to see the team working together."

Neil Cavuto said that two otherwise conservative senators have become "doubters" of the tax plan, saying it does not protect enough against raising the deficit.

Cavuto said Steve Daines of Montana and Ron Johnson of Wisconsin may need to be convinced further before they are on board.

Portman said he is friends with both men and understands their concerns, adding that he is confident that they will be a "yea" on the final product.

"They are becoming convinced that this is a very conservative approach," he said.

Watch more above.

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