The remedy may vary slightly depending.I would put IRS compliance ahead of a clear chain of title, and would ensure that the title attorney produces and records the necessary documents to clarify the chain of title as an amendment to any new deed.I would also get documentation from the title attorney regarding the error.  

One of the things that I always put into my contracts is a clause that states that amendments to the contract can be made by following a predetermined process and getting all the signatories to sign the amendment.

If your lease is vague or doesn't include wording about a tenant's ability to alter or do repairs to the property only with your written consent, see if it is possible to amend the lease; the tenant-landlord laws of your state  may allow you to serve a notice so this does not happen again.

We allow for up to one past eviction, but we will look into the circumstances, what they have done since, and require them to made amends.

As far as the gun ,  2nd amendment , its a non issue  in my eyes . 2 of my tenants are hunters . 

If they change the amendments to the law, just don't ever sign it. 

Call your own attorney to get this matter quashed and show you won't just bend over and take it.Second, get your attorney, or possibly a new one, to amend your lease to include necessary hold harmless language as well as necessary wording about limitations on suing you, tenant agrees to reimburse you legal expenses etc.  

And I agree, that you can press charges for a bounced check, too.Kick him out and then wait to see if he includes you in his list of "amends" for his 4th step :-)

check with your county or city's zoning (ie, maps, and/or call them) to ask if ADU's are allowed in ur zoning. the answer is yes or no, not maybe. if so, ADUs still need to have permits and the C of O amended to show SFH plus 1 ADU and where the ADU is etc.

If they are on month 10, and you are in an area where you can get equal or more rent, I would amend the lease to a 12 month period and let them move one.