Candidates Split On Homeland Security Spending : NPR

They're both dummies. As Schneier on Security summarizes John Mueller's The Quixotic Quest for Invulnerability: Assessing the Costs, Benefits, and Probabilities of Protecting the Homeland:

1. Any protective policy should be compared to a "null case": do nothing, and use the money saved to rebuild and to compensate any victims.
2. Abandon any effort to imagine a terrorist target list.
3. Consider negative effects of protection measures: not only direct cost, but inconvenience, enhancement of fear, negative economic impacts, reduction of liberties.
4. Consider the opportunity costs, the tradeoffs, of protection measures.