How was billy graham an influential social leader in the united states

Graham gave a new dimension to Christianity, in his speeches he used to explain faith as a kind of self-denial. But what made him a great leader was the idea of a unified Christian church, without different denominations, since all serve one God.  This caused a revolution in American Protestant Christianity which made Grahan more and more influential to the point of being invited to speak in Communist countries and to be a spiritual council of such great politicians as Queen Elizabeth II, George W Bush, Richard Nixon , among others .

His success was so great that he was the first religious leader to be honored at the capitol of the United States of America

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whose power in the senate is equal to the power of the speaker of the house?