Former federal prosecutor Doug Burns on Wednesday demolished the narrative that Hunter Biden should not have faced federal gun charges because of the unique circumstances of the defendant. A jury convicted Biden on all three charges in the case brought in September, including providing false statements and knowingly possessing a gun while being addicted to drugs. Burns, on “Wake Up America,” acknowledged these gun purchasing cases are relatively uncommon, but said Biden’s “exposure for other criminal conduct” is why the charges should have been brought against him. Read: Juror Tells CNN He Doe…