I can't speak for every Federal District, but gun prosecutions in my area, the Southern District of Georgia, are on the rise, not wane. Typically if a convicted felon is caught with a firearm the case is prosecuted by both state and federal jurisdictions with the state deferring to the Feds once the plea is entered in District Court. Today I visited at the local jail a 21 year-old, non-violent felon, who received a sentence of 92 months to serve with a 3 year supervised release. The state has dropped prosecution. This was the second time he was caught with a gun. This time he was caught driving a bicycle at night without a headlight and a gun was found in his backpack. He will serve every minute of the 92 months with credit for good time not to exceed 45 days for each year of sentence.
The Feds want solid cases before they accept prosecution. Weaker cases are left to the state to prosecute. Gil