The Federal Law
Since 1865, federal law has banned armed federal personnel at polling places. In 1909, Congress deliberately removed the only exception — there is no law enforcement justification for armed feds at the polls. Not for "keeping the peace." Not for preventing fraud. Nothing.
18 U.S.C. § 592 — TROOPS AT POLLS
Any federal employee who stations armed personnel at a polling place commits a felony and is permanently barred from federal service. The DOJ's own manual says FBI agents cannot be stationed at polls.
5 YEARS PRISON
$250,000 FINE
CAREER DEATH