Is there a moral way to fix America's kidney shortage?

For those who need a transplant, the wait for an organ in America is growing longer: As Nobel economist Gary Becker lays in out in a recent op-ed for The Wall Street Journal, 95,000 Americans were on the waiting list for new kidneys in 2012, but only 16,500 kidney transplants occurred that year. Today, there are over 78,000 candidates waiting for an organ transplant. The exchange of kidneys represents what economists call a repugnant market: It could be made more efficient if people were allowed to pay for them, but there are ethical concerns about introducing money into the equation.