President-elect Donald Trump may want to deport millions of undocumented criminals, but analysts say they exist mostly in his mind.

In an interview with CBS 60 Minutes that aired Sunday, Trump said his administration would expel or imprison some 2 million or 3 million undocumented immigrants with criminal convictions. But Trumps estimate greatly exaggerates the overall number of undocumented immigrants, experts say leaving them to wonder whether hes still embracing the idea of mass deportation on which he campaigned, or whether hes simply winging it at this point.