Hillary Clinton will attend a $2,700-a-plate luncheon on Friday at the Beverly Hills home of a man who was investigated by the Senate for hiding $68 million in assets in an offshore tax haven. Peter Lowy, who was born in Australia but is a U.S. citizen, is chief executive officer of the Westfield Group, one of the world’s largest owners of shopping malls. The company was founded by his father, Frank Lowy, and is controlled by the Lowy family. The family came under fire in 2008 when a report from then-Sens. Carl Levin (D., Mich.) and Norm Coleman (R., Minn.)...