Caro anatomizes the genius for political strategy and tactics by which, in an institution that had made the seniority system all - powerful for a century and more, Johnson became Majority Leader after only a single term — the youngest and greatest Senate Leader in our history;
how he manipulated the Senate's hallowed rules and customs and the weaknesses and strengths of his colleagues to change the «unchangeable» Senate from a loose
confederation of sovereign senators to a whirring legislative machine under his own iron - fisted control.