U.S. Senate tax bill stalls on deficit-focused 'trigger'

(Adds Marc Short comment, background)

By Amanda Becker and David Morgan

WASHINGTON, Nov 30 (Reuters) - The U.S. Senate on Thursday delayed voting on a Republican tax overhaul as the bill was tripped up by problems with an amendment sought by fiscal hawks to address a large expansion of the federal budget deficit projected to result from the measure.

The Senate debated the legislation late into Thursday and adjourned, putting off any votes until Friday morning. It was unclear if a decisive vote on the bill would occur then.

The delay underscored nagging concerns among Republican fiscal conservatives about the deficit impact of the bill. That set up the possibility that its deep tax cuts might have to be moderated, that future tax increases might be built in, and that some conservatives might seek to attach spending cuts, all approaches that could throw up new political problems.

White House legislative affairs director Marc Short told reporters in the Capitol: "I don’t think tax cuts are going to be scaled back. I think it would still be historic tax relief for corporations and for middle-income families."

The tax bill is seen by Republicans as crucial to their prospects in the November 2018 elections, when they will fight to keep control of the Senate and the House of Representatives.

Since taking office in January, President Donald Trump and Republicans now in control of Congress have yet to pass major legislation, a fact they hope to change with their proposed tax- code overhaul, which would be the biggest since the 1980s.

Democrats, expected to unanimously oppose the tax bill, have dismissed it as a giveaway to the wealthy and corporations.

Republican Senator Bob Corker and others had tried to add a provision to the bill to trigger automatic future tax increases if the tax cuts in the bill did not boost the economy and generate revenues sufficient to offset the deficit expansion.

But the Senate parliamentarian barred Corker's "trigger" proposal on procedural grounds.

The trigger amendment was needed to win Corker's vote and those of others worried about the deficit - worries that intensified when congressional analysts said the bill would not boost the economy enough to offset the estimated deficit expansion, as the Trump administration had said it would.

Senate Finance Committee Chairman Orrin Hatch told reporters in the Capitol that it had not been easy to accommodate Corker, Senator Jeff Flake and other fiscal hawks. “It’s been pretty hard to make them happy so far. We’re going to keep working on it ... and we’re going to do it," Hatch said.