Blade says he doesn't have to pay taxes to the United States government. Link. Maybe there is a 'half-vampire' exemption tucked somewhere in the voluminous Internal Revenue Code. But one thing concerns Conspiracy Theory Central (an avid fan of the Blade Trilogy, a cult classic): did you see what happened to them vampires when they tried to lock up Blade? He wasted every last one of the blood suckers. Them Feds better find one hell of a secure prison if they plan on locking up Blade. Maybe that one they chucked Manuel Noriega's ass into in the corn fields of Illinois.
Just a little tip to the U.S. Bureau of Prisons: DON'T LET BLADE GET HIS SERUM!