Washington (CNN) President Donald Trump is already picking a fight with Puerto Rican officials as a tropical storm barrels toward the island, showing insensitivity to Americans still recovering from one crisis and facing another.

"We are tracking closely tropical storm Dorian as it heads, as usual, to Puerto Rico. FEMA and all others are ready, and will do a great job. When they do, let them know it, and give them a big Thank You - Not like last time. That includes from the incompetent Mayor of San Juan!" Trump tweeted from the White House Wednesday morning.

Later Wednesday, he continued to slam the territory's government and praise himself.

"Puerto Rico is one of the most corrupt places on earth. Their political system is broken and their politicians are either Incompetent or Corrupt. Congress approved Billions of Dollars last time, more than anyplace else has ever gotten, and it is sent to Crooked Pols. No good!" he wrote , adding, "And by the way, I'm the best thing that's ever happened to Puerto Rico!"

Trump's lack of empathy for Puerto Ricans has been at odds with his treatment of storm victims in the continental US during his tenure in office, prompting criticism of racism, including from some local officials defending their home.

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