Weld-Helms Conflict -- Host Bob Edwards talks with former governor of Massachusetts William Weld about his battle to become ambassador to Mexico. President Clinton's nomination of Weld has been blocked by Senator Jesse Helms, chairman of the Foreign Relations Committee. Helms says Weld has been too lenient on the drug issue. Weld says his record and nomination should be discussed in an open and fair hearing with the committee, a hearing Helms has promised to block. After pleas from members of his committee, Helms finally agreed to hold a "special meeting" tomorrow to discuss Weld's nomination.