U.S. Senate Republicans were trying to pass President Donald Trump's sweeping tax-cut and spending bill on Monday, despite divisions within the party about its expected $3.3 trillion hit to the nation's debt pile.

The $3.3 trillion legislation survived a brief GOP revolt over the weekend to allow the Senate to move forward with debate on the measure, but its final passage is far from certain.

Senate Republicans can afford to lose no more than three of their own votes on the bill, but two already are opposed and others remained undecided.