He's perfectly comfortable with laws against paying unfair wages, and prohibiting racial discrimination. Both of these positions are very much in alignment with the Catholic faith. Yet abortion is about killing a fellow human being, and suddenly he can't bring himself to support legislation?
His rationalization is a paper-thin defense, only believed by the amazingly gullible, or morally corrupt.
As Kerry has shown that he has no core values ever thing he supports must have a immediate payoff.
The kids can't vote for another 18 years. Thus there is no quick payoff to Kerry trying for their vote.
But the people who want to kill these kids for fun and profit are currently able to vote. So it pays for Kerry to grovel for their votes
Remember, you have to parse this stuff. He PERSONALLY doesn't want to get aborted. As for other folks, well, we all have a right to choose.