President Donald Trump is threatening to strip people of their U.S. citizenship, including political foes, as his administration works to deport people from the country in mass numbers.

On his first day back in office, Trump signed an executive order affirming the “right of the American people to engage in constitutionally protected speech.”

O’Donnell previously shared that the two had a good relationship prior to becoming famous, but later developed a bit of “weirdness.”