The number of people in immigration detention has soared by more than 50% since President Trump took office — and that doesn't include thousands more detainees who aren't in the administration's official count, an Axios review finds.

Why it matters: A record 60,000 immigrants are now officially in long-term detention, according to the latest government data, a historic jump from the 39,000 or so who were behind bars at the end of the Biden administration. • The catch: The Department of Homeland Security's tally doesn't include detainees in new facilities such as those in Florida's now-infamous "Alligator Alcatraz," spaces designated as short-term "holding rooms," and military bases. • The numbers continue to balloon as Trump's aggressive immigration crackdown escalates in cities natio

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