WASHINGTON — President Biden will call for “unity” in his State of the Union speech Tuesday night — after spending much of last year bashing Republicans himself and through his press secretary. White House officials teasing Biden’s 9 p.m. speech — which will also pitch tax hikes on the wealthy — told reporters Tuesday morning that he will dust off “unity” talking points from his State of the Union last year to argue “members of both parties can come together and deliver for the American people.” The so-called unity agenda focuses on four areas — cancer, mental health, veterans care...