Threats against a federal official? Way to get yourself an FBI visit, dumb-as-Gravel.
http://caselaw.lp.findlaw.com/casecode/uscodes/18/parts/i/chapters/19/sections/section_372.html
United States Code
TITLE 18 - CRIMES AND CRIMINAL PROCEDURE
PART I - CRIMES
CHAPTER 19 - CONSPIRACY
U.S. Code as of: 01/19/04
Section 372. Conspiracy to impede or injure officer
If two or more persons in any State, Territory, Possession, or
District conspire to prevent, by force, intimidation, or threat,
any person from accepting or holding any office, trust, or place of
confidence under the United States, or from discharging any duties
thereof, or to induce by like means any officer of the United
States to leave the place, where his duties as an officer are
required to be performed, or to injure him in his person or
property on account of his lawful discharge of the duties of his
office, or while engaged in the lawful discharge thereof, or to
injure his property so as to molest, interrupt, hinder, or impede
him in the discharge of his official duties, each of such persons
shall be fined under this title or imprisoned not more than six
years, or both.