WASHINGTON (AP) - The White House emphatically renewed President' Bush's threat to veto a bill heading toward Senate passage that would authorize federal funding for embryonic stem cell research, a practice Bush loathes. ``If (the bill) were presented to the president, he would veto the bill,'' read a fresh official statement of administration policy Monday, with the sentence underlined for emphasis. ``The bill would compel all American taxpayers to pay for research that relies on the intentional destruction of human embryos for the derivation of stem cells, overturning the president's policy that funds research without promoting such ongoing destruction,'' it...