BULLHEAD CITY, ARIZ. — It's hard to buy undeveloped land in booming northern Arizona for $166 an acre. But now-Senate Majority Leader Harry Reid effectively did just that when a longtime friend decided to sell property owned by the employee pension fund that he controlled. In 2002, Reid (D-Nev.) paid $10,000 to a pension fund controlled by Clair Haycock, a Las Vegas lubricants distributor and his friend for 50 years. The payment gave the senator full control of a 160-acre parcel in Bullhead City that Reid and the pension fund had jointly owned. Reid's price for the equivalent of 60...