So far, I have seen the poor response to the disaster in Puerto Rico liked to that of Katrina in 2005, and called worse than the response by the U.S. to Haiti Earthquake (2010). Here are some of the details on why things are going so slowly:
From the WashPost: Getting relief supplies to Puerto Rico ports is only half the problem.
From the Wall St. Journal: Puerto Rico Aid Trickles In. Damaged roads and few truck drivers are among the logistical challenges facing the relief effort.
Update: San Juan Mayor Fumes After Top Trump Official Calls Puerto Rico Response A ‘Good News Story’. “Damn it, this is not a good news story. This is a people are dying story.”