UPDATED: GOP senators back motion on tax bill after hold up

Republican deficit hawks held up a motion on the Senate tax plan for close to an hour before voting against sending the bill back to the Finance Committee.

Senate Majority Leader Mitch McConnellAddison (Mitch) Mitchell McConnellDemocrats worry a speedy impeachment trial will shut out public George Conway group drops ad seeking to remind GOP senators of their 'sworn oaths' ahead of impeachment trial GOP senator 'open' to impeachment witnesses 'within the scope' of articles MORE (Ky.) and other GOP leaders huddled around Sens. Jeff Flake (Ariz.), Bob CorkerRobert (Bob) Phillips CorkerRNC says ex-Trump ambassador nominee's efforts 'to link future contributions to an official action' were 'inappropriate' Lindsey Graham basks in the impeachment spotlight The Hill's 12:30 Report — Presented by Nareit — White House cheers Republicans for storming impeachment hearing MORE (Tenn.) and Ron JohnsonRonald (Ron) Harold JohnsonHillicon Valley: Barr asks Apple to unlock Pensacola shooter's phone | Tech industry rallies behind Google in Supreme Court fight | Congress struggles to set rules for cyber warfare with Iran | Blog site Boing Boing hacked Congress struggles on rules for cyber warfare with Iran Senators set for briefing on cyber threats from Iran MORE (Wis.) on the Senate floor as Republicans discussed the tax bill.

At one point, almost 20 senators were huddled around the Senate parliamentarian as she appeared to be explaining a document in her hand. 
After the vote was open for about an hour, Flake, Corker and Johnson voted against sending the bill back to committee.
The unprecedented floor drama came after the Joint Committee on Taxation said Thursday that projected economic growth under the bill would reduce revenue losses by $408 billion over 10 years, but the bill overall would still cost about $1 trillion.
Senate Majority Whip John CornynJohn CornynDemocrats worry a speedy impeachment trial will shut out public Sunday shows - All eyes on Senate impeachment trial Cornyn disputes GAO report on withholding of Ukraine aid: It's 'certainly not a crime' MORE (R-Texas) said the discussions on the floor were focused on finding an alternative to the "trigger" concept backed by Corker, which would impose higher taxes if economic growth forecast under the bill fails to materialize, causing the deficit to skyrocket.
"It doesn't look like the trigger is going to work. ... So we have an alternative, frankly, tax increase we don't want to do," he said.