Thank you for your question. I look forward to working with you to provide you the information you are seeking.
Whether or not they could come to your house depends on the reason they were there. That needs to be determined first to know whether or not they violated any laws or your constitutional rights to be free from unreasonable searches under the Fourth Amendment. Without knowing this information, there is no attorney on this planet who could tell you whether or not you have a case.
Legally, if they were responding to some type of complaint or a request for a wellness check, they are allowed to enter your home to investigate to satisfy themselves that everyone at the residence is fine and no criminal activities or abuse are occurring. However, they cannot just come to a citizen's residence for no reason at all without receiving some type of complaint and just force their way into a home without a warrant.
You need to consider a local civil rights
attorney in one of the larger cities nearby (since they will not have much connection with the sheriff) and seek to engage them to at least investigate to find out why the police were there to begin with and if they had legitimate grounds.
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