The Obama administration outlined a plan on Wednesday to reduce the corporate tax rate to 28 percent. It would also close many loopholes and impose a minimum tax on businesses. The proposal has little chance on Capitol Hill, but it's a starting point for a political debate this election season.

The four remaining Republican candidates debate Wednesday night in Mesa, Ariz. Host Audie Cornish talks with Ted Robbins, who is in Arizona in advance of the state's Republican primary next Tuesday.

Audie Cornish speaks with Jim Tankersley, Economics Correspondent for the National Journal, about how oil prices have affected the outcomes of elections in the past.