more than one million migrants have entered the country, many of whom will wait months or years for hearings because of legal and procedural backlogs. More than a million were similarly admitted on a temporary basis over a two-year stretch of the Trump administration, according to data analyzed by the Migration Policy Institute; these migrants are distinct from the many who enter the country undetected.

the jungle of the Darién Gap between Colombia and Panama, and later traveling across Mexico, where he said migrants were faced with “a lot of corruption.”

filling facilities meant to house adults beyond capacity. Months later, Border Patrol officials drew harsh criticism for their treatment of thousands of Haitians who had gathered under a bridge at the border.

Administration officials have said it will take time to unwind harsh policies aimed at keeping migrants out that were put in place by former President Donald J. Trump. It took Mr. Biden more than a year to eliminate a Trump-era program that forced asylum seekers to wait in squalid camps in Mexico, in part because of court rulings.

But disagreements among Mr. Biden’s immigration advisers also slowed progress as aides battled one another. The debates have prompted many of those key advisers to leave the White House.

Legislation to overhaul the nation’s immigration system, which Mr. Biden introduced on his first day as president, failed to gain traction in Congress.

approximately 6.8 million, tying with Ukraine’s exodus as the largest migration in the world. Venezuela’s economic, social and democratic crisis began in 2013; economists have called the resulting migration the worst outside of war in decades.

The two private charter flights landed in Massachusetts between 3 p.m. and 5 p.m. on Wednesday. They flew from San Antonio to Crestview, Fla., in the state’s Panhandle, then to Spartanburg, S.C., and finally to Martha’s Vineyard, Mr. Freeman said. He could not explain the Florida and South Carolina stops; Mr. DeSantis’s office did not respond to an inquiry about them.

“No one on Martha’s Vineyard knew this plane was coming,” Mr. Freeman said.

In a statement on Thursday afternoon, Gov. Charlie Baker of Massachusetts, a Republican, said his state had “many resources for assisting individuals that arrive in Massachusetts with varying immigration statuses and needs.”

His administration, he added, was exploring setting up “temporary shelter and humanitarian services” at a Cape Cod military base.

As far back as December, Mr. DeSantis had mentioned the prospect of migrants arriving in Martha’s Vineyard to force a crackdown on illegal immigration. On Thursday, he said he was happy to facilitate their transport to “greener pastures.”

“Every community in America should be sharing in the burdens,” he said. “It shouldn’t all fall on a handful of red states.”

The people gathered in Niceville, Fla., cheered.

Will Sennott reported from Edgartown, Zolan Kanno-Youngs and Eileen Sullivan from Washington, and Patricia Mazzei from Miami. Reporting was contributed by Peter Baker, Michael D. Shear and Zach Montague from Washington, J. David Goodman from Houston, Jesus Jiménez and Julie Turkewitz from New York, Miriam Jordan from Los Angeles, and Remy Tumin from Edgartown.


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