Rhetoric, nothing more.
Cruz currently has no interest in being Trump’s VP. Trump currently has no interest in being VP to Cruz. Both are technically true.
Let Trump win the nomination on the first vote, and Cruz may change his mind (which would be good for America). Let Trump watch his delegates desert him after the first ballot and Cruz ask for support to win the third ballot, and Trump may be willing to team up as VP for Cruz to nominate an anti-immigration conservative (which would be good for America). We’ll see when the time comes.
I disagree. Donald Trump is nobody’s VP...ever. Trump is Alpha male to the core.