BB- Certainly the statement "1. The human fetus is, from conception, a human being." must be considered seriously. If one accepts it, than anyone using "morning after" contraception must be considered a murderer.
The alternative, is, of course, to arrive at a legal definition of the stage of fetal development that qualifies as a human being. THis can make the legalities of contraception and early abortion workable, but only t the expense of the beliefs of those to whom question 1 is inarguably true.