Governor John Lynch has vetoed a bill that would have expanded New Hampshire’s homicide law to include causing the death of a fetus. Lynch said Monday he could support legislation that required a fetus to be viable or about 24 weeks old before a prosecution could be brought. The bill set the age at about 8 weeks. Lynch said the bill fails to contain a viability standard. Both the House and Senate had voted in favor of charging someone with first-degree murder, second-degree-murder, or negligent homicide for causing a pregnant woman to lose her fetus, but they disagreed over when the bill should apply.