President Trump early Friday praised Republican senators' work to pass tax reform and accused Democrats of attempting to block the legislation "because it is too good."

"Republicans Senators are working hard to pass the biggest Tax Cuts in the history of our Country. The Bill is getting better and better. This is a once in a generation chance. Obstructionist Dems trying to block because they think it is too good and will not be given the credit!" Trump tweeted.

Republicans Senators are working hard to pass the biggest Tax Cuts in the history of our Country. The Bill is getting better and better. This is a once in a generation chance. Obstructionist Dems trying to block because they think it is too good and will not be given the credit! — Donald J. Trump (@realDonaldTrump) December 1, 2017

Senate Republicans are scrambling to pass tax reform before the year ends, in what would be their first major legislative victory under Trump. Hopes to start a floor marathon of voting, known as a vote-a-rama, on Thursday were dashed when senators still couldn't reach a deal on the deficit.

Democratic senators voted against starting the debate on bill, and are expected to vote against the legislation. Republicans control 52 seats and can afford only two defections on the legislation. Vice President Pence could be used to break a 50-50 tie.

ADVERTISEMENT

If the Senate can approve its legislation this week, Congress would have the month of December to work out differences between the Senate and House bills.