Why are they in charge?

I just received an email from one of my senators (Tom Harkin) in response to an action item I filled out and had sent via email from eff.org a month or so ago. Here it is: Dear Bryan: Thank you for contacting me. I am always glad to hear from you. First, I would like to apologize for the delay in getting back to you. As you may remember, in the fall of 2001, a letter containing a substantial amount of anthrax was sent to Majority Leader Tom Daschle’s office in the Hart Senate Office Building, where my office is also located.