Soria would be elected to Congress for four consecutive terms, becoming Chairman of the Constitutional Affairs Committee. He also served in the Justice, Impeachments, and Money Laundering committees; chaired the
joint committee investigating the
1992 Israeli Embassy attack in Buenos Aires and the
1994 AMIA bombing (the two most significant acts of
Islamic terrorism in Argentine history); and served in the
Council of Magistracy of the Nation. Soria shared President
Carlos Menem's opposition to trials opened in 1996 in
Spanish courts against
Dirty War perpetrators by Judge
Baltasar Garzón, and personally led a delegation to protest these trials; when Judge Garzón turned the tables on the delegation by calling them to testify, they returned, however, creating an embarrassing diplomatic incident. He later presented a bill to restrict rights and toughen sentences for those accused of violent crime, as well as another which would have granted
congressional immunity to all members in perpetuity; both bills were defeated. Soria promptly released hitherto sequestered police files relating to the case which confirmed that the robbery, as well as the deaths of all robbers and hostages alike, had been orchestrated by Provincial Police officers. Remaining on the electoral list for National Deputies, Soria took his seat in Congress in December representing the Province of Buenos Aires. He became among the leading congressional opponents of President
Fernando de la Rúa's
austerity package, scuttling a 2000
decree which would have cut public sector salaries (this ultimately took place the following year). President de la Rúa's resignation in December 2001, and the subsequent Congressional designation of Duhalde as provisional president resulted in Soria's appointment as Secretary of
State Intelligence (SIDE) in January 2002. ==Tenure at State Intelligence==