the greatest tax cut in u.s. history. >> i think we will get there. it will be in a very short period of time. it will be the greatest christmas present that a lot of people have ever received. it will be something special. >> for the latest on the tax debate let's bring in cnn's phil mattingly on capitol hill. >> reporter: for republican leaders today is the day they said they will release the full tax overhaul plan, the final bill they plan on voting on. one problem. they don't necessarily have the votes and late thursday night they were working on hammering out the details. one of the big moments senator marco rubio saying he was a no on the deal that had been struct. his issue the child tax credit boosted from $1,000 to $2,000. he wants it to be more refundable basically adding more to people in terms of what they