Don't agree. If you want to decriminalize something, you make it a petty misdemeanor. I don't think the legal definition of crime includes petty misdemeanors. But I'm picking nits, fundamentally we are in agreement. I'm not sure about that specific trespass statute (the one you mentioned with intent), and that may very well be more than a petty misdemeanor. I just looked up the charge for trespassing on federal property, so you could very well be right about that. Above my pay grade.
"A misdemeanor is a crime punishable by less than 12 months in jail. Community service, probation, fines, and imprisonment for less than a year are commonly issued punishments for misdemeanors. More grievous crimes, felonies, carry stiffer penalties, including jail time of more than 12 months. type. wex definitions." - Cornell Law School
https://www.law.cornell.edu/wex/misd... definitions