Two government executives charged with monitoring the U.S. Medicare and Medicaid programs have spent up to two months each year traveling to popular vacation spots at public expense, a leading senator has charged.

In a letter to the Department of Health and Human Services administrator Mark McClellan, U.S. Sen. Chuck Grassley, R-Iowa, says that Drs. Stephen Jencks and William Rollow spent 325 days over the last five years on the road.