A new state-run immigration detention center nicknamed “Alligator Alcatraz” is set to open Tuesday in the Everglades.

Just months after President Donald Trump’s administration quietly moved to undercut a hardline immigration push by Florida Gov. Ron DeSantis, the two Republican former rivals appeared side by side on Tuesday for the opening of a new migrant detention center in the Everglades.

Trump and DeSantis have a complicated history, with the president’s endorsement propelling the little-known congressman to the governor’s mansion in 2018. In a television ad, DeSantis sat with one of his children and used mock bricks to build a border wall.