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Former Florida GOP Gov. Jeb Bush defended the Common Core education standards Thursday, but offered an olive branch to Republican activists who oppose them and are making them a litmus test for potential 2016 presidential candidates.

Bush's longtime support has put him crosswise with part of the Republican base. He said that he finds the new angst over Common Core "troubling," but that there is room for disagreement among those who more generally support school reform.

With the Louisiana Senate runoff driving votes in both chambers of Congress on the Keystone XL pipeline, here's a question: How many of those jobs will actually be in Louisiana?

The answer: zero.

The 10 biggest breaks, deductions and credits in the U.S. income tax code are costing the Treasury $900 billion this year, with more than half of that total benefiting the wealthiest 20 percent of taxpayers.