Conservatives are rejoicing. They see the United States already on a path of fundamental tax changes that will accelerate economic growth. "Stealth tax reform," it has been called. That's because relatively few voters are aware of the significance of the changes in the system proposed by President Bush and incorporated in the three tax-cutting measures passed by a Republican-led Congress since he took office. "George W. Bush is the first president to actively understand and embrace the fundamental core principles of tax reform," says Ernest Christian, a founder of the Center for Strategic Tax Reform in Washington. The ultimate tax-reform...