Adding fuel to the already fierce debate over abortion, Republicans in Congress are invoking the Laci Peterson (news - web sites) murder case as they try to enact the first federal law to endow a fetus with legal rights separate from the expectant mother. Laws similar to the federal bill already are on the books in more than half the states, and with Republicans in control of both chambers of Congress, the federal measure has a good chance of passing. President Bush (news - web sites) has pledged to sign the act, which sponsors have renamed "Laci and Conner's Law"...