US stocks fell in early trading on Friday amid concerns over the passage of a Republican tax overhaul as lawmakers debated over the bill's impact on the federal deficit.
Republicans were wrangling behind the scenes over how to raise $350 billion or more in taxes over 10 years to prevent their legislation from ballooning the federal deficit if the proposed cuts fail to generate the expected economic growth.
A surprise endorsement by Republican Senator John McCain added momentum to the bill on Thursday, pushing the S&P 500 to close at a record and the Dow Jones index to break above the 24,000

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