President George W. Bush's nomination of John R. Bolton as U.S. permanent representative to the United Nations has divided members of Congress along party lines. But it is unclear if Democrats will have any more luck in derailing Bolton's nomination to the new post than they did four years ago when Bush tapped the conservative favorite as the Department of State's point man on arms control and nonproliferation issues.
Bolton, currently undersecretary of state for arms control and international security, has long been a close political ally of top conservatives, such as former Senate Foreign Relations Committee Chairman Jesse Helms (R-N.C.) and Sen. Jon KyI (R-Ariz.), and served …