Why Did Obama Vote to Suspend A Gas Tax in Illinois but won't support it Nationally?

Hillary and McCain support a gas tax holiday. However, Obama opposes it. (Reference http://blogs.wsj.com/washwire/2008/04/21/clinton-joins-mccain-on-gas-tax-obama-opposes/?mod=WSJBlog The savings to consumers would be 18.4 cent per gallon on federal tax and 24.4 cent for diesel tax. As a State Senator,... show more Hillary and McCain support a gas tax holiday. However, Obama opposes it. (Reference http://blogs.wsj.com/washwire/2008/04/21...

The savings to consumers would be 18.4 cent per gallon on federal tax and 24.4 cent for diesel tax.

As a State Senator, however, Obama voted to suspend the State sales tax on motor fuels. (Reference S.B. 1310: Senate Third Floor Reading, Passed, 50-0-6, 3/8/00, Obama Voted Yea).

Illinois suspended its 5% sales tax on motor fuels.


Why did Obama think it was a good idea to give the people of Illinois a break on their gas tax but not the entire nation?
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