President Bush has again defended Judge Samuel Alito, saying the Supreme Court nominee has more prior judicial experience than any candidate to the high court in more than 70 years. The president said Wednesday Alito understands a judge's responsibility to interpret the law without personal bias, and called on Congress to quickly confirm him. The president's remarks came as the full U.S. Senate began its debate on the nominee. The Senate Judiciary Committee Tuesday confirmed Alito on a 10 to eight vote, along party lines. Massachusetts Senator John Kerry said he opposes the nomination. The Democrat said the conservative Alito could upset the center of balance on the court. Many Republicans have dismissed Democratic opposition, accusing them of playing politics with the nomination. The Republican-controlled Senate is expected to confirm Alito, perhaps by Friday. He would replace retiring Justice Sandra Day O'Connor, a moderate who has been an important swing vote in many cases.