Thieu to resign. The call came in a brief statement issued by the archbishop's office and bearing his signature.
Archbishop Binh cited an appeal by the Senate, normally controlled by a proGovernment majority, which called for new leadership. He said this appeal reflected the people's aspiration for change.
The Senate's resolution, passed by all 41 members present in the 60-seat chamber, did not explicitly name Mr Thieu, but the archbishop called on him to respond.
"In the nation's present situation, the people are very confused and all social strata are hoping for an immediate and orderly change of leadership," the archbishop said.
"I recognise that the aspiration of the people is just and think that President Nguyen Van Thieu should respond to the people's aspirations and the demand for leadership changes put by the Senate."
The American Catholic Relief Services is willing to continue its massive relief work in South Vietnam and Cambodia whatever regime is in power.
Fr Charlehois said there were no plans to evacuate 157 CRS employees in South Vietnam or 347 employees in Cambodia until the security situation demands the evacuation of the American Embassy."