I think Ed clearly picked out the best questions Balko asked of McCain, but here are a couple other questions for Obama that I particularly liked:
In a speech to Cuban-Americans in Miami, you called the Cuban trade embargo "an important inducement for change," a 180-degree shift from your prior position. The trade embargo has been in place for 46 years. Did denying an entire generation of Cubans access to American goods, culture, and ideas induce any actual change? Wasn't the real effect just to keep Cubans poor and isolated? In communist countries like Vietnam and China, trade with the U.S. has ushered in economic reform, and vastly improved the standard of living. Why wouldn't it be the same if we were to start trading with Cuba?Balko asked a question of McCain about the Bipartisan Campaign Reform Act (BCRA, also known as McCain-Feingold), which I think did serious damage to the First Amendment and protects incumbent politicians by prohibiting any corporation (including nonprofits) or by an unincorporated entity using any corporate funds from running ads critical or supportive of a candidate within 30 days of a primary or within 60 days of a general election. I agree McCain should be asked tough questions about his apparent disrespect for political speech, but I didn't particularly care for the specific question Balko came up with.
In addition to the drugs, Cuba, and school voucher issues, you have also changed or revised your position in recent months on the war in Iraq, government eavesdropping and immunity for the telecom companies, and holding employers accountable for hiring illegal immigrants. Under some circumstances, changing or revising one's position can show admirable introspection — the ability to revise prior conceptions with new information. Some of your new positions are more conservative. Some are more liberal. But they do seem to have one thing in common: Should we be concerned that your shifts have been to those positions that give more power and influence to government? Are there any areas where you'd actually roll back the federal government?