Sen. Marco Rubio

Addressing what he calls a "growing opportunity gap" between people with and without advanced educations, Sen. Marco Rubio is calling for state-accredited alternatives to four-year colleges and income-based repayments for college loans.

The Florida senator and possible 2016 Republican presidential contender also says Congress should establish an independent accrediting agency to assess free courses offered over the Internet and elsewhere as transferrable credits. (AP)

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