WASHINGTON - Debating science, ethics, morality and humanity, the Senate prepared Tuesday to send a bill expanding federal funding of embryonic stem cell research to an unreceptive President Bush. It wasn't a matter of simple party politics, however, as some of Bush fellow Republicans launched a last-ditch lobbying effort to save the bill from his veto. Wrote California Gov. Arnold Schwarzenegger: "Mr. President, I urge you not to make the first veto of your presidency one that turns America backwards on the path of scientific progress and limits the promise of medical miracles for generations to come." And former first...