I think it was about four to five days into the event that the federal government had a better assessment of what the situation was in Puerto Rico and it was at that point they started ramping up their response. The quickest resource they can get there faster is the active duty military, but even they need time to "get organized" and then transit the ocean to be on scene and start rendering aid.
Puerto Rico had many issues before this event and they cannot dig themselves out of their situation now without massive aid from the federal government. It is a fact of life, and lives are what is on the line, and still are in this destroyed island.
Now is not the time to try to score political points, now is the time to just plain help as much as we can.