Analysis

Nearly 60 percent of respondents in a recent survey said they had received a medical bill that they thought should have been covered by their insurance.

The arguments come as Republicans try to defend their control of the House and Senate and Democrats make health care a central campaign issue.

Nearly one in five hospitals in the U.S. mark up medicine prices 700 percent or more--and eight percent are going as high as 1,000 percent.

DALBAR's Harvey: TPAs would benefit the most from Open MEPS among service providers.

While TV ads can help boost enrollment for an insurer, the gains may not be great enough to offset the cost of the ad campaign.

Existing sponsors of single plans would see annual audit expenses slashed if they join a MEP.