America's mainline protestant churches are in trouble. One sign is shrinking membership. Another is turning their political policymaking over to fringe leftists whose deepest instinct is to blame America and pummel Israel whenever possible. The latest disgrace is the Presbyterian Church's plan for selective divestment in Israel--ending the church's investment in multinational companies that the church believes bear particular responsibility for the sufferings of the Palestinian people. For example, the Presbyterians say they may divest themselves of Caterpillar stock, because bulldozers made by that company are used to level Palestinian homes in Israel's antiterrorism campaign. Of course, these bulldozers can...