In New Jersey, he wouldn't. The property is neither fenced nor marked with no trespassing signs. Presumably, he has never been advised not to go on the property. As such, he does not appear to have the requisite intent to violate a trespassing statute.
However, this would be the likely outcome in New Jersey. I am unfamiliar with Mississippi law and qualify this answer with that in mind.
Mississippi has no requirment to post no tresspassing notices on property to warn others not to tresspass.That being said,I have no information concerning court orders between your husband and his former wife,or for child visitation.Since the child's mother had visitation that weekend it is her decision on where the child will be.Further the crime of tresspass is just a charge at this point,and a charge is not a conviction! Your husband was justified in his concern about his childs disapperance,and while his actions may be warranted,he will still have to go to court and defend his tresspassing chrge.He should consult with a criminal defense lawyer today and not try to repsent himself.Good Luck!!
Legal disclaimer: This communication is for informational purposes only, and does not establish any attorney-client relationship, pursuant to the... more Legal disclaimer: This communication is for informational purposes only, and does not establish any attorney-client relationship, pursuant to the applicable Mississippi Rules of Professional Conduct