By harboring, what do you mean?
The Massachusetts State Police went to Cardinal Law’s residence on a Friday afternoon. As *luck* would have it he was not at home. Cardinal Law flew out early the next morning, First Class, for Rome where a cushy position was waiting for him. AFAIK he has not been back to find out exactly what the State Police wanted.
BTW in his new Vatican position Cardinal Law is involved in selecting new bishops. Nice, huh?
A leader who wished to end the crisis would sack Cardinal Bernard Law