That is borderline harrassment and might be considered worse than the smoking offense in the first place.

No offense but you should know the answer to this question if you own rental properties. 

Meant no offense. 

It is a misdemeanor federal offense to knowingly claim more exemptions then you are entitled to on your W-4.

He is not sure now as it has not been resolved (offense was in October 2015), but his attorney believes it will be misdemeanor as it is his first offense.

If they have prior felony or misdemenor convictions in a list of areas (sex offenses, drug-related charges, dishonesty / fraud, violence, child or elder abuse) they are not qualified.  

You might not, but you can't count on it.In the United States, a first offense fine is $16,000 per discriminatory event.  

I notified a potential tenant via text that their application was denied after the $35 tenant screening service revealed an active, open bankruptcy (<6 months) (as well as two prior dismissed bankruptcy filings), a recent eviction filing and judgment (<6 months), two collection actions, and a prior but old criminal conviction (non-violent offense).

Falsifying information is a pretty serious offense. 

In any prosecution (for trespass) under RCW 9A.52.070 and 9A.52.080, it is a defense that:(1) A building involved in an offense under RCW 9A.52.070 was abandoned; or(2) The premises were at the time open to members of the public and the actor complied with all lawful conditions imposed on access to or remaining in the premises; or(3) The actor reasonably believed that the owner of the premises, or other person empowered to license access thereto, would have licensed him or her to enter or remain:Second,  abandonment can be implied.