Every year for the past two decades, legions of young Americans have descended on Japan to teach English. This government-sponsored charm offensive was launched to counter anti-Japan sentiment in the United States and has since grown into one of the country's most successful displays of soft power.

But faced with stagnant growth and a massive public debt, lawmakers are aggressively looking for ways to rein in spending. One target is the Japan Exchange and Teaching Program, or JET.

Versions of the JET program can be found in other countries. French embassies around the world help to recruit young people to teach their languages in France for a year. The U.S. Fulbright program, run by the State Department, works in both directions: American graduates are sent abroad to study and teach, and foreigners are brought to the U.S. to do the same.