I'm not sure what "any issue" might mean, but the "don't judge" idea to me is two-fold, cautionary, practical advice.
I'm new at this, but my understanding so far is, God is Judge and no one else. Judging is His job. Why? I can think of several reasons, but mainly because He created all and He's perfect.
We aren't perfect. We're sinners, no matter what our good works, nor what form they may take. We are sinners, each and every one of us.
Our imperfections, as God sees them, make us imperfect, sometimes harmful judges, perhaps even hypocrites, in His view. So, we're not to take God's job and do His judging.
Why? Well, mainly because He said so, but also because everything comes back around, one way or another. It's a part of His rules and how he built the world. There are many ways to say it.
For example, "Forgive us our trespasses as we forgive those who trespass against us" is one way to say it.
"Judge not, that ye not be judged" is another.
It all comes back around and is used for you or against you. Your call either way. Use your free will wisely.
Personally, I think it can be a very hard rule to follow, especially with politicians.
None the less, Jesus loves us all the same and wants us to be like Him and do as He does, even if that means loving the neighbors who don't "deserve" it, or even those who have earned wrath instead.
If I think of it, I try to remember to take a deep breath, count to 5 or ten or so and remind myself that "He will Judge me, too."
Personally, I think it can be a very hard rule to follow, especially with politicians.