The bombs were fashioned from pressure cookers and designed to avoid detection by bomb-sniffing dogs. So more Gubmint spending would have failed to detect it.
There is an Jihadist Publication which instructs on how to build bombs from everyday Kitchen items that Security forces can not detect. (No Matter How Many Tax Payer Dollars are Spent).
http://freebeacon.com/al-qaeda-link-probed/
Remember Tom Daschole after 9/11? He required the TSA to buy a percentage (40%?) of new scanners from his donors, even though their machines didn't work.