@Yankee,
Could you tell me what the redundancy is?
The Border Patrol is a full time job. The National Guard is a weekend a month job.
The FBI investigates crimes. The CIA does spy work overseas and can't work in the US.
I agree, Homeland Security was a knee jerk reaction. But the Patriot Act was an even bigger jerk reaction. Homeland security was an attempt to put the FBI, domestic agencies and CIA under one umbrella. It took too many departments like FEMA and changed their focus making them less efficient.
As always, in reducing the government, the devil is in the details. We already see an increase in crimes because the FBI was moved into terror investigations and away from it's criminal work.