The nation’s Roman Catholic bishops have rejected a compromise on birth control coverage that President Obama offered on Friday and said they would continue to fight the president’s plan to find a way for employees of Catholic hospitals, universities and service agencies to receive free contraceptive coverage in their health insurance plans, without direct involvement or financing from the institutions.

The United States Conference of Catholic Bishops — which has led the opposition to the plan — said in a statement late Friday that the solution offered by the White House to quell a political furor was “unacceptable and must be corrected” because it still infringed on the religious liberty and conscience of Catholics.

The bishops’ decision to rebuff the compromise means that “religious freedom” will continue to be a rallying cry for some Catholics who have heard it preached from the pulpit for the last three weeks, for evangelical Christians on the religious right, for Republican candidates on the campaign trail and for members of Congress who are supporting a legislative fix on Capitol Hill.

Administration officials said the White House had never expected to get the bishops’ support, given their absolute opposition to contraception, and was surprised when the initial statement of the bishops conference on Friday was noncommittal and went so far as to call the president’s modification a step in the right direction.