U.S. Rep. Jesse Jackson Jr. is experimenting with a dangerous drug: power. Power intoxication makes smart people do stupid things and destroys political careers as well as individual lives. Power intoxication obliterates humility, reason, perception and any sense of proportion. Those under the influence invariably over-reach, which is their downfall. History and literature are loaded with examples. Jackson has a measure of power. He defeated the Shaw brothers, supporting Reverend Meeks over state Sen. William Shaw. He can replace virtually any south suburban mayor. When Jesse says "jump," they say "how high?" Is the congressman becoming intoxicated on power? Jackson...