Or they just don’t care.
In politics & punditry, facts/history don’t matter when it doesn’t fit your agenda - works for the Leftists/Dems/Progs all the time. I believe Jeb does ‘care’, just 180 degrees in the opposite direction from what Ike cared about. As for BORE, since he doesn’t think deportation will work or is reasonable, anything or anybody not agreeing with his opinion is dismissed as irrelevant.