She does not have the authority to order a County Sheriff to not do something that is legal.Department of Homeland Security Secretary Janet Napolitano has just ordered Maricopa County Sheriff Joe Arpaio to stop arresting suspects based solely on the fact that they are illegal aliens.
DHS Napolitano orders Sheriff Arpaio to stop looking for illegal aliens
Seems to me that she is not following her Oath.
I really do not like this Sheriff, but he can arrest anyone in his County who breaks a law. Federal/State or local.
When a law breaker is legally in his custody and the Feds will not pick them up, he can bring them right down to the boarder and turn them over to Boarder Patrol/INS. They will then document them and send them right back across the boarder. (if they are Mexican)
In this situation he would not be physically removing them from this Country.