Ex-Mexican police leader slain Man gunned down in Valley had been accused of corruption 02/06/2003 By BRENDA RODRIGUEZ and ALFREDO CORCHADO / The Dallas Morning News McALLEN, Texas - A former high-ranking Mexican law enforcement official was fatally shot in the head Wednesday morning outside a lawyer's office in McAllen. Guillermo Gonzalez Calderoni, 54, was shot once in the left side of his face shortly before 11 a.m. as he sat in his car outside the office of McAllen lawyer Robert Yzaguirre, McAllen police said. Mr. Gonzalez was once a powerful Mexican federal police commander who fled to this...