Biden's apparent shift "appeals to moderates and independents in the electorate but does risk alienating more progressive members of the party," said Louis DeSipio, a political science and Chicano-Latino professor at UC Irvine. "Biden's on a tightrope with this issue," DeSipio said. "It's the first time in quite a while that Democrats have had this level of internal division over immigration." … DeSipio said Trump, both during his presidency and in the years since, has "captured the fear of the change that was coming to the country" with migration over the past few decades and amplified it.

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