John Hancock signed the Declaration of Independence, not the Constitution. It is the Declaration of Independence, not the Constitution, that refers to Life, Liberty and the Pursuit of Happiness.
The Constitution is our highest law. It includes articles and amendments, which include the Bill of Rights.
LEARN THE FUCKING DIFFERENCE!!!!!
Oh...and while we're on the subject of getting a fucking clue, know this: stem-cell researchers do NOT use stem cells from aborted fetuses, nor do they create embryos for the sole purpose of taking their stem cells. They use leftover embryos from in vitro fertilization procedures that have been frozen for several years and would just be thrown away anyway.