WASHINGTON -- Senate debate on the highway bill stalled Friday after arguing broke out over an amendment designed to increase state spending by giving "bonuses" to state that spend more on highways.

The amendment, offered late Thursday by Senate Appropriations Committee Chairman Robert Byrd, D-W. Va., would tack on $8.2 billion in federal highway spending in the next five years to the $115 billion of highway and mass transit spending already contained in the bill.

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