The last time Trump was president, he visited numerous disaster zones, including the aftermaths of hurricanes and tornadoes.
More than 1.3 million clients were without power early Tuesday and officials say it could take up to two days to restore power.
It is forecast to become a major Category 3 storm in upcoming days.
President Donald Trump says he thinks the federal government did a "fantastic job in Puerto Rico" despite the deaths of nearly 3,000 people after Hurricane Maria.
Puerto Rico has conceded that Hurricane Maria killed more than 1,400 people on the island last year and not just the 64 in the official death toll.
A new study contends that Puerto Rico saw many more deaths than normal in the three months after Hurricane Maria devastated the island, mostly because of problems getting medicines or medical care.
Puerto Rico was hit by Hurricane Maria exactly six months ago, and the U.S. territory is still struggling to recover from the strongest storm to hit the island in nearly a century.
Puerto Rico's governor is ordering authorities to review all deaths reported since Hurricane Maria hit nearly three months ago amid accusations that the U.S. territory vastly undercounted storm-related deaths.
Puerto Rico's struggling government says it will face a cash shortfall by the end of the year and it's seeking billions of dollars in additional federal funds to help it cope with the expenses caused by Hurricane Maria.
President Donald Trump is heading to San Juan on Tuesday to meet with some of the 3.4 million Puerto Ricans struggling to recover from Hurricane Maria.