Going through a custody case to get grandkid away from abusive Mom who has a firearm in the home. When we had a 911 call over at Moms home I told the 2 sheriffs deputies that there was a gun in home, they responded that guns are legal. I told them she is also a medical marijuana user and that it was illegal under Fed Law to have both a Medical Card and a firearm. The deputy responded “do you see any Fed Agents around here”? So, what good are those laws? She would have to commit a crime with the gun before the Feds would maybe even care.
Same could be said if she were an illegal alien. Local cops don't enforce federal law.
You could have called the ATF on her.