I think he’s going to attach the label “anchor baby” to Rubio. Since it is a true fact, he won’t be able to shake it. It will stick even more to his baby face.
He’ll probably just keep asking the question.
AHA! You're on to him!
Creating enthusiasm killing doubt is every bit as or more effective than actually proving an allegation, and it takes so much less investment in time and money.
It would be like getting someone to tweet that they think a competitor's buffet made them sick...the rumor would travel faster than the alleged digested material...
I predict Trump will tie it to Rubio’s plan to allow amnesty and highlight the differences between Trump’s approach and Rubio’s approach on immigration.