SAO PAULO (Reuters) - Attempts by Brazil's Congress to water down anti-corruption and campaign funding legislation that sparked public outrage in recent days have hampered confidence in the South American country, President Michel Temer said on Thursday.

Temer, speaking at a seminar sponsored by JPMorgan Chase & Co in São Paulo, vowed to send to lawmakers a plan to overhaul the country's costly pension system as early as next week.

(Reporting by Guillermo Parra-Bernal; Editing by Daniel Flynn)