sentences:  As a result, in 1979, the first independent (non-PRI) communist deputies were elected to the Congress of Mexico.Within the PRI, party president Carlos Sansores pushed for what he called "transparent democracy", but the effort went nowhere.Although López Portillo's term started with economic difficulties, the discovery of significant oil reserves in Mexico allowed him to borrow funds from foreign banks to be repaid in dollars against future revenues to allocate funds for social spending immediately.