Can LE bring any charges against a landlord who has a provider as his tenant?  How much responsibility would he have to inform them (LE) of any possible laws being broken, to avoid any of those possible charges against him?  Could property be seized?  Is this something that a lawyer would have a good chance to beat?  Would this vary from state to state?  

Thanks

im no lawyer but im sure it would depend on if the landlord knew what was going on

I think it unlikely that a landlord would be criminally liable for the conduct of a tenant under the normal/typical circumstances.  There is any duty on the part of a landlord to report his suspicions.  Knowledge is tough to prove unless the landlord tells others but even then he doesn't "know", he thinks.

If the landlord profits from sex for money though, other than rent, he's got a problem.

Everything varies from state, laws, courts and sentencing.

Any type of charges can be filed..but the bottom line..is will they hold up. In this scenario..landlord has no knowledge..tenant lives in seperate unit..no knowledge..no proof..(very weak)  If landlord has tenant living in a room in his or her house..this is a differennt scenario..or accepts money in return for favors..a sticky issue..and very well could cause problems.

it was like a hotel that had rooms by the hour?  Is that still in the realm of "still not sure" for the landlord to stay out of legal problems or has that crossed the line of "reasonable lack of knowledge"?

The mere fact that two people get a hotel room for an hour does not mean that they are doing anything illegal.  For example, they might just be co-workers who are cheating on their spouses during their lunch hour.

Unless the landlord is involved, and probably LE would need to show he's getting a clear benefit (i.e. an exhorbinant rent for the apt) for them to go after him. It's hard enough to prove knowledge and intent with an involved party.

I'd take it one step further with a crime police would be more likely to aggressively pursue - drug manufacturing/distribution. Without a clear quid pro quo between those involved and the landlord, it's nigh impossible to go after him.

In the rental car business, you have many drug dealers who rent a car for a weekend run, knowing that if they get caught, the confiscated car won't be their own, and the rental car company can get it released pretty quickly. The rental company may even guess pretty strongly what is being done, but without direct knowledge they cannot be charged, and in many cases they HAVE to rent to the person even if they don't want to, because the individual qualifies and they risk a discrimination lawsuit if they turn him/her down.