A UT Austin/LBJ School student of Economics Professor James K. Galbraith has submitted the following question to CNN for the CNN/Univision debates on Thursday between Hillary Clinton and Barack Obama.

It's perfect -- and may push these candidates beyond their risk-averse and tepid reactions to the news that Fidel Castro's last term as Cuba's President will come to an end on February 24th:

"The United States has maintained an embargo against Cuba since 1961, separating families, causing personal hardship, abrogating the constitutional right of U.S. citizens to travel freely -- and all with absolutely no political effect on Cuba.

Do you agree that, as a policy, the embargo has failed? And if so, what steps will you take to end it?"

The student has take the route of anonymity in this case -- but note to Wolf Blitzer, this is the right question to pose.

CNN should make sure this one is on the docket.

-- Steve Clemons