I just saw the headline that SCOTUS has agreed to hear the administrations appeal on the 5th Circuits ruling against ATF's Privately Made Firearms rule.  I immediately sent a note to my Senators on the Judiciary Committee.  You should too.  Feel free to cut and paste.

Senator,
 The Supreme Court has just agreed to hearing the administration's appeal on the ATF's new rule concerning Privately Made Firearms, PMF, or what the press prejudicially refers to as "ghost guns."  It is imperative that before this case is heard, Directors Wray and  Dettelbach be asked, or required to respond if you can: the number of gun traces performed per year AND the number of convictions for violent crimes with a firearm where the sole clue to identifying the perpetrator was through a trace of the firearm used in the crime.  If the number is actually greater than zero, to name the cases.
Thank you