Schumer went to the island, along with other high-profile New York politicians, for the annual SOMOS Puerto Rico Conference to help promote Latino representation in the state's government.
"Schumer is feeling the music at Somos," New York Times reporter Emma Fitzsimmons announced in a Friday night tweet with a clip of the senator dancing.
The tweet came after House lawmakers passed Democrats' $1.2 trillion infrastructure bill across party lines, with 13 Republicans voting in favor of the legislation and six Democrats voting against it.
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Puerto Rico currently asks for masks in indoor settings, regardless of an individual's vaccination status; it further requires masking at both indoor and outdoor events with over 50 people.
Furthermore, the Somos website notes that in Puerto Rico, "masks are required in all indoor spaces, regardless of vaccination status," including for children ages two through 11.
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Schumer's office did not immediately return to an inquiry.
Almost 70% of Puerto Rico's adult population is completely vaccinated, and the island has a moderate COVID-19 transmission rate compared to the United States' mostly high transmission rate, according to the Centers for Disease Control and Prevention (CDC).
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Several federal and state government leaders have been seen on camera defying state mask mandates that they have supported. Mask, vaccine and other COVID-19-related requirements have been largely politicized since the first days of the pandemic as government leaders proceed to take greatly different positions on some measures being imposed on the public.
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Masks are still needed in public places, including schools and grocery stores, in counties across the U.S. in an attempt to prevent the spread of COVID-19.
Some places like New York City require people to present evidence of vaccination in order to enter indoor restaurants and other businesses without a mask.
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Meanwhile, Schumer announced on Wednesday that Democrats would explore "alternative paths" to pass voting rights legislation after Republicans blocked a bill named after the late Rep. John Lewis (D-Ga.).
Schumer, speaking from the Senate floor, didn't directly mention the legislative filibuster, though floated that Democrats have to be willing to go it alone to pass voting rights legislation and that the gears of the Senate have "ossified."
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"Just because Republicans will not join us doesn't mean Democrats will stop fighting. This is too important. We will continue to fight for voting rights and find an alternative path forward, even if it means going it alone," Schumer announced.