BUENOS AIRES—The battle for control over Argentina's Central Bank moved to the country's Congress, capping a weekend drama in which police barred the dissident top banker from entering his office.

Martín Redrado, who had vowed to go to work as usual Monday even as the government stationed police in front of the bank to keep him out, shifted his strategy by trying to enter the bank Sunday night, said his lawyer Gregorio Badeni. His aim, the lawyer said, was "to avoid an uncomfortable situation, perhaps of violence...that would...