I was in San Juan yesterday and today. 75 corporate jets unloading supplies bought with their own money. Many military planes and 100's of soldiers. Aid organizations like World Vision and Samaritan's Purse were there with 100's of workers. Many, many stacks and pallets of supplies, food and water ready to go out. Soldiers in the streets with hand saws cutting trees down so that trucks can deliver materials to the citizens. Traffic on the highway near San Juan looked normal. Power is on to about half the country, gas stations are 60% open. A lot of progress in a few days. 
The humanitarian response was overwhelming, and would make any one proud.
Every neighborhood was full of citizens, sitting on their porch, arms folded. No piles of debris that they had gathered up. Clutter undisturbed on their lawns. Just sitting waiting for someone else to help them. It reminded me of Katrina.
Trump is 100% right, and the mayor is 100% lying. It is maddening that she would put politics over people.