Mitt Romney obviously felt he had no choice but to give a speech yesterday on his Mormon faith. Even by the low standards of this campaign, it was a distressing moment and just what the nation’s founders wanted to head off with the immortal words of the First Amendment: A presidential candidate cowed into defending his way of worshiping God by a powerful minority determined to impose its religious tenets as a test for holding public office.

Mr. Romney spoke with an evident passion about the hunger for religious freedom that defined the birth of the nation. He said several times that his faith informs his life, but he would not impose it on the Oval Office.

Still, there was no escaping the reality of the moment. Mr. Romney was not there to defend freedom of religion, or to champion the indisputable notion that belief in God and religious observance are longstanding parts of American life. He was trying to persuade Christian fundamentalists in the Republican Party, who do want to impose their faith on the Oval Office, that he is sufficiently Christian for them to support his bid for the Republican nomination. No matter how dignified he looked, and how many times he quoted the founding fathers, he could not disguise that sad fact.

Mr. Romney tried to cloak himself in the memory of John F. Kennedy, who had to defend his Catholicism in the 1960 campaign. But Mr. Kennedy had the moral courage to do so in front of an audience of Southern Baptist leaders and to declare: “I believe in an America where the separation of church and state is absolute.”