The Trump administration is stitching together a wider network of immigrant-detention sites, expanding capacity by thousands of beds through agreements with local jails and private contractors across the country.

About 60 additional local, state and federal jails and prisons have begun holding newly arrested migrants facing deportation since Donald Trump’s inauguration on Jan. 20, according to government figures analyzed by Bloomberg.

The facilities include five run by the Federal Bureau of Prisons, four operated by private contractors including CoreCivic Inc. and GEO Group Inc., and two sites at the US naval base at Guantanamo Bay, Cuba. Together, they held an estimated 5,600 people per day between May 27 and June 9, based on a tally of average daily population data.

The administration is expanding capacity as it moves to carry out more than 1 million arrests a year — which hinges on having enough space to hold people until they can be deported. The deals with additional detention centers helped enable US Immigration and Customs Enforcement to hold more than 59,000 people as of late June, even though Congress had funded roughly 41,500 detention beds.

Alongside the federal government’s push to add more space, at least one Republican-led state is moving quickly to build its own facilities.

Florida last week opened a tent complex in the remote Everglades, nicknamed “Alligator Alcatraz” for its swampy location. The site, set up on a decommissioned airfield, is expected to hold up to 3,000 migrants, including those arrested by ICE and by state and local officers authorized to make immigration arrests under a federal agreement.

Trump has praised the facility and its location, pointing to it as a model for states looking to play a more forceful role in immigration enforcement. “You have a lot of cops in the form of alligators,” he said during a visit last week. “I wouldn’t want to run through the Everglades for long. It will keep people where they’re supposed to be.”

In May, Homeland Security Secretary Kristi Noem told lawmakers during a budget hearing that the administration wanted to expand immigration-detention capacity to at least 100,000 available beds. Weeks after that hearing, she and Stephen Miller, Trump’s top immigration advisor and deputy chief of staff, ordered top ICE officials to reach a minimum of 3,000 arrests a day.

While authorities have struggled to attain that target, average daily arrests surged to 1,000 in June as ICE agents teamed up with federal officers from across the government, including the Federal Bureau of Investigation, Drug Enforcement Administration and Internal Revenue Service. The raids have swept through car washes, street vendor hubs and even Home Depot parking lots where day laborers congregate looking for jobs.

The US has seen the expansion of its immigration detention system before, but nothing on the scale now being proposed, according to Doris Meissner, who led the now-defunct Immigration and Naturalization Service during the Clinton administration.

Meissner said a 1996 immigration law marked a turning point, requiring that certain migrants facing deportation be held in custody. It also widened the list of deportable offenses.

“The combination vastly increased the population of people considered criminals and subject to mandatory detention,” said Meissner, who now directs the Migration Policy Institute’s immigration policy program.

Even so, the current plans by the Trump administration exceed that era in both size and scope, said Meissner.

On Friday, Trump signed a sweeping budget bill that includes $45 billion for new immigration jails-part of $150 billion in new funding to carry out his immigration and border-control agenda.

At the same time, arrests of migrants caught crossing the southwest border illegally have plummeted to lows not recorded since the 1960s. DHS said this week that about 6,000 people were arrested along the almost 2,000-mile US-Mexico border in June.