Reagan was not as obsessive about anti-abortion legislation as he often seemed. Early in his California governorship he had signed a permissive abortion bill that has resulted in more than a million abortions. Afterward, he inaccurately blamed this outcome on doctors, saying that they had deliberately misinterpreted the law. When Reagan ran for president, he won backing from pro-life forces by advocating a constitutional amendment that would have prohibited all abortions except when necessary to save the life of the mother. Reagans stand was partly a product of political calculation, as was his tactic after he was elected of addressing the annual pro-life rally held in Washington by telephone so that he would not be seen with the leaders of the movement on the evening news. While I do not doubt Reagans sincerity in advocating an anti-abortion amendment, he invested few political resources toward obtaining this goal.
Source: The Role of a Lifetime, by Lou Cannon, p. 812 Jul 2, 1991
Perhaps it is not quite fair to hold President Bush to a much higher standard. I admire and respect both President Reagan and President Bush but perhaps they are not quite as different as some would have us believe.
RR wrote a book condemning abortion.
One merely has to read thru Abortion and the Conscience of the Nation to know where RR stood, exactly, on the issue of abortion.