#Denaturalization is a tactic that was heavily used during the #McCarthy era of the late 1940's & the early 1950's & one that was expanded during the #Obama admin & grew further during #Trump's first term. It's meant to strip #citizenship from those who may have lied about their #criminal convictions or membership in illegal groups like the #Nazi party, or #communists during #McCarthyism, on their citizenship applications.