This clip is somewhat nonsensical, but if I understand it correctly, Jeb Bush is calling Marco Rubio an anchor baby and using him as an example of why he believes anchor babies should be American citizens:
I think Jeb is confused here. Marco Rubio and his parents are Cuban, and America has a legal refugee program for people escaping Cuba, that they are welcome if they can make it here. Therefore his parents were not illegal when they came here and Marco Rubio is not an anchor baby.