Complex sentence: When the copyright on "Science and Health" expired in 1971, the church persuaded Congress to extend it to 2046; the bill was supported by two of President Nixon's aides, Christian Scientists H. R. Haldeman and John Ehrlichman.
Split into simpler sentences: When the copyright on "Science and Health" expired in 1971, the church persuaded Congress to extend it to 2046. The bill was supported by two of President Richard Nixon's aides, Christian Scientists H. R. Haldeman and John Ehrlichman.