In addition to pursuing the death penalty where possible, the Attorney General shall, where consistent with applicable law, pursue Federal jurisdiction and seek the death penalty regardless of other factors for every federal capital crime involving:
(i) The murder of a law-enforcement officer; or
(ii) A capital crime committed by an alien illegally present in this country.
The Attorney General shall encourage State attorneys general and district attorneys to bring State capital charges for all capital crimes with special attention to the crimes described in Subsections (i) and (ii), regardless of whether the federal trial results in a capital sentence.
Assuming this isn’t an after the fact arrest, if you kill a cop in a gun fight, and now you know you’re a dead man even if you surrender, why should the cops even bother to try and bring you in.
They witnessed the crime. Punishment is death. Let them be the judge, jury and executioner.