As several replies have noted, Hilton‘s national leadership is trying to distance themselves from the whole thing — “We welcome everyone! Please don’t come at us!” — and are making it clear this was a local decision.
The problem is that now Hilton is in the spotlight, and if they force the local Hilton to let ICE back in, they’ll put themselves smack in the middle of a national firestorm (like the one Target still hasn’t recovered from…or worse).