President Obama's passivity before the threatened foreign prosecution of Bush administration officials achieves by inaction what he fears doing directly. This may be smart politics within the Democratic Party, but it risks grave long-term damage to the United States. Ironically, it could also come back to bite future Obama administration alumni, including the president, for their current policies in Iraq, Afghanistan and elsewhere.

Obama has taken ambiguous, and flatly contradictory, positions on whether to prosecute Bush administration advisers and decision makers involved in "harsh interrogation techniques." Although he immunized intelligence operatives who conducted the interrogations, morale at the CIA is at record lows. The president has played to the crowd...