I haven't seen a lot of public officials attacking people with children over Cannabis use, usually when I hear about it happening here in CO it's an Ex or a relative trying to use their Cannabis use against them.
The Courts (And Federal level) can still be biased when it comes to THC. You can have a couple, one smokes pot and the other partner drinks. The partner who drinks (she) starts to become abusive when drunk, this results in the couple splitting up and the courts get involved because they had a child together. The partner who was drinking raises the issue the the other partner has a substance problem too because that partner smokes pot resulting in that partner having to stop smoking pot and having to do drug tests on a regular basis to be able to have primary custody of the child.
Then if you have a state MMJ card and smoke, that is a strike against you if trying to get SSDI.