[frebdel]

It does not reveal intentions, I agree.

So why do they want DNA? Ask the State Department. I'm not a geneticist, but if it was completely useless they would not be collecting it.

My point is that the current infeasibility of collecting everyone's DNA could be the only reason they're not doing it.

Edit: And ask the NSA or FBI if they'd like to have the DNA of every possible terrorist (and, incidentally, yours and mine).