Well that explains everything.

Man arrested at White House reportedly interested in Chelsea Clinton

LITTLE ROCK - Court documents show an Arkansas man who jumped the fence at the White House was preoccupied with Chelsea Clinton, not any current occupants of the White House.
A court-ordered mental report on 29-year-old Shawn Cox of Mammoth Spring says he believed that Chelsea Clinton still lived at the White House, and that he was destined to marry her.

Via Free Republic