If you don't mind my $0.02 worth, I offer the following:
1) Yes, you might be putting yourself in 'trouble' in allowing him to stay with you while knowing that a warrant is outstanding. This is considered 'harboring or abetting a fugitive'.
2) Unless the warrant was issued for some particularly heinous crime (murder of police officer, child involvement, etc.), I don't believe that the eventual arrest would be 'worse'.
If you are concerned about possible repercussions for an arrest in your home, you can make an 'anonymous' call to the local authorities and let them know information on the car he is driving, or where he is going when he goes out.
Best of luck to you in this surely trying situation...
There are at least 17 lawsuits (!!) filed in various courts, including the US Supreme Court, asking if Obama is a natural born citizen (as req'd by Art II, Sec 1 of the US Constitution).
Why has he spent over $1.7M in legal fees to block disclosure... rather than spend $12 for a VALID birth cert to settle the matter? The 'certificate' he has presented doesn't qualify to get a drivers license, wouldn't allow a child to qualify for Little League, or for a real citizen to get a US passport!