The Republican presidential field is looking to change the tax system in America and economists on both sides admit that there are benefits. According to John Harwood of The New York Times, Republican candidates would like to tax consumption rather than income much like what is done in Europe. 

Although Democratic economists (who historically favor Progressive taxes) also agree with this plan, don't plan on it getting passed anytime soon:

The political difficulty of replacing entrenched systems represents a huge barrier. That’s why Mr. Obama’s health care law grafted changes onto the existing structure of American health insurance rather than create an entirely new one. So even economists who favor consumption taxes agree that movement toward them will be incremental.

For more information on the possible benefits and blocks to taxing consumption, head over to The New York Times. 

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