With progressives no amount is ever enough.
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This is a classic Washington crisis by the numbers. Congress sets up a “trust fund” — in this case, the Highway Trust Fund — and depletes it by spending the cash on projects that have nothing to do with highways. When there’s no money left, taxes must be raised.
The Obama administration sells this fanciful tale with claims that America’s cars and trucks have been made magically more fuel-efficient by government fiat, and since everybody is paying less than ever in taxes on gasoline, raising the tax on gasoline won’t actually hurt. It might sound plausible, but that’s not the story the numbers tell. In 2009, gross receipts for the gasoline tax were $24.6 billion. Every year since, they’ve gone up, to the most recent accounting of $25.5 billion. Separate taxes imposed on diesel fuel for the big rigs brings the total sum to $41.3 billion.
That’s a lot of money, and it’s keeping America’s roads and bridges in the best condition in decades. According to a Cato Institute review of Federal Highway Administration figures, nearly 9 percent of all bridges in the National Highway System were deemed “structurally deficient” in 1992. That number has been steadily declining, and less than 4.6 percent of bridges are now considered “structurally deficient.” “Structurally deficient,” by the way, is not “structurally dangerous.”
Still, Mr. Obama and his transportation secretary, Anthony Foxx, want to replenish the Highway Trust Fund with a $150 billion tax increase on U.S. businesses. Mr. Foxx says he will take “untaxed earnings … and plow some of that into infrastructure.”
If he gets the money, there’s no assurance he will spend it on tumbling bridges and crumbling highways. This White House has been spending the money intended for bridges and highways on niceties, such as bike paths, sidewalks, hiking trails and landscaping. Billions more go to high-speed rail, trolleys and other expensive mass-transit projects.
The Highway Trust Fund was created as a user-pay, user-benefits system, in which those who paid fuel taxes would see those dollars returned through road and bridge construction, repair and maintenance. It has become a slush fund to pay for wants, not needs.
Read more: http://www.washingtontimes.com/news/2014/jun/6/editorial-highway-robbery-341987467/#ixzz33wt7nffB
But, there is alot of examples of government waste and inefficiencies that could be cut and we are supposedly more productive these days that a tax increase shouldn`t be needed. 
