So it is not a question of it can't be done. It can. All that remains is the question of whether there is the political will in the White House and Congress to carry it out.
That's an unsupported and untrue assertion. The chances of success all depend on the aim. If it's destruction of the Iranian program, that is one thing air strikes can't do. If the aim is to degrade their nuclear capabilities then that might be possible if our intelligence is good enough. Of course Iran is fully aware of our air capabilities and there's no possibility of strategic surprise, so they will surely have taken steps to preserve their capabilities.

You can look at Desert Storm for an example. Despite almost 1000 strikes against various NBC targets we did little but degrade their capabilities. We only struck 2 out of 20 nuclear-targets - we didn't know the others existed. In short, one of the biggest air campaigns in history not only failed to "destroy" those programs, but only succeeded in degrading them temporarily.

And if you read the various testimony and reports (Rex links to just a few), no one with any credibility on the subject actually believes that air strikes along can destroy Iran's program. Therefore, that is not a means that will achieve your stated aim.

And one other thing to keep in mind. The Israeli destruction of Osirak in 1981 was what prompted Saddam to pursue a fast-track to a uranium-based weapon. Prior to that, nukes were kind of a neat idea and potential long-term goal. Osirak, since it was under safeguards, was more of a hedge and method to get access to technology that a plant specifically designed to produce plutonium for an existing weapon's program. The Osirak strike changed that and afterward resources were poured into an effort to make nuclear weapons. One of the myths of the Osirak strike is that it prevent Saddam from building a plutonium weapon - that turned out to be wrong.

So you might want to consider the effect of actions that fall short of destroying Iran's capabilities. In other words, one really should make sure that a particular action does not precipitate the very thing that action is purported to prevent.