Apparently Trump and Lindseed play golf together all the time. I don’t get it but....
Graham is chairman of the Senate Budget Committee.
He is who gets to score various plans upcoming for Reconciliation. A basic rule of Reconciliation is that a bill cannot add to the deficit or it cannot be voted on via Reconciliation, per the parliamentarian.
So Graham has, so far, chosen to score the bills upcoming as not increasing the deficit (even though they will) and Trump must have that conclusion or the bill has to face the 60 vote filibuster constraint.