Not the wrong Sessions, IMHO.
Remember, every time Cruz had to defend his anti-amnesty credentials against Rubio’s constant attacks during the debates, he boasted that Jeff Sessions, the ultimate anti-amnesty bastion in the Senate, agreed with what he did. The idea of Jeff Sessions’ support also suggested that perhaps Cruz had at least one friend in the Senate, something often questioned by the other candidates, including Trump.
It’s got to be a blow to Cruz that his ‘friend’ Jeff Sessions now endorses Trump, specifically saying he is endorsing Trump because he is the only candidate he trusts to secure the borders with no amnesty.
I still say a Pete Sessions endorsement would have done a lot of good for Cruz.