The Declaration of independence - the precursor to the constitution - says that life, liberty and property are GOD-GIVEN RIGHTS. The govt. has no power to take away or aware these rights. One of the stated purposes of the Constitution was to 'SECURE THESE RIGHTS'. Privacy (a right invented in Roe v. Wade) does not trump the right to life. Period. Irrefutable.
The Declaration of Independence has a legal value equal to a song written by Francis Scott Key. Nothing in it's text can be used to construe law in the United States. It's a historic document, nothing more.