The 48-year-old father of four children joined in the big demonstrations last year that led Ricardo Rossello to resign as the island's governor.
The tropical storm is posing an increasing menace to Florida as it pushes over open waters after doing limited damage in Puerto Rico and the Virgin Islands.
US forecasters warn that Tropical Storm Dorian could reach hurricane strength by the time it passes Puerto Rico's southwestern coast on Wednesday.
Billed as one of the biggest protests ever seen in the US island territory, thousands of irate locals pledge to drive Governor Ricardo Rossello from office over offensive chat scandal.
Amid shocking stories of devastation left by Hurricane Maria on the US territory, growing questions about the lack of assistance by the US authorities are topped off by President Donald Trump throwing rolls of paper at survivors.
Visiting Puerto Rico on Tuesday, Trump said jokingly that the recovery from Hurricane Maria on the island was blowing the US budget "a little out of whack."
Amid criticism, US President is set to make his first visit to Puerto Rico two weeks after Hurricane Maria devastated the US territory.
With the death toll from Hurricane Maria at 33 across the Caribbean, the National Weather Service office in San Juan issued a flash flood warning for people living along the Guajataca River in the northwest of the island.
Maria weakened into a category 4 hurricane as it hit land, making it the first of its kind to hit Puerto Rico since 1932.
US President Donald Trump visits Florida that was ravaged by Hurricane Irma. The death toll from Irma stands at 81, including 38 in the United States.
Hurricane Irma, which was downgraded to a tropical storm on Monday, has claimed at least 43 lives in the Caribbean and 11 in Florida, Georgia and South Carolina.
Florida orders evacuation of 5.6 million people as Hurricane Irma closes in. Trump warns the storm has “historic destructive potential.”
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