US President Donald Trump is disputing official findings that nearly 3,000 people died in Puerto Rico as a result of last year's storms.
"3000 people did not die in the two hurricanes that hit Puerto Rico," Mr Trump wrote on Twitter, without offering evidence for the claim.
He accused Democrats of inflating the official death toll to "make me look as bad as possible".
The official figure was released last month after an independent study.
On Thursday, Mr Trump tweeted that Democrats were attacking him "when I was successfully raising Billions of Dollars to help rebuild Puerto Rico".