Senate Majority Leader Mitch McConnell announced the Senate will vote today on whether to begin debate on a $1.4 trillion tax cut measure.

"Today, the Senate will take the next important step to fix the tax code," McConnell, R-Ky., announced on the Senate floor Wednesday.

Republicans are expected to approve the motion to proceed on the bill, which will then be open to unlimited amendments before final passage, likely later this week.

"The bottom line is this," McConnell said."We must vote to begin debate because once we do we will be one step closer to taking more money out of Washington's pocket and putting it in the pockets of the hard-working men and women we represent."

Several Republicans are seeking changes to the bill, but are likely to vote for the measure with the understanding that it will be changed through the amendment process.

McConnell urged lawmakers to vote to begin debate, "and offer their amendments."