Nixon is sworn in
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Humphrys' surprise at cost of ticket to Nixon's inauguration

Money has always been an important part of American politics - and not just in terms of the campaign for votes.

The inauguration of the new president also costs money. Back in 1973, the festivities for the second swearing-in of President Nixon amounted to an estimated $2.4m (£1.5m).

The BBC's John Humphrys previewed the event, noting how it would cost £20 for a seat near the speech and £200 for a box at the presidential ball.