Washington

'No one is caving," Grover Norquist says emphatically and repeatedly when we meet this week in his office in the nation's capital. By "no one" he means congressional Republicans, and by "caving" he means surrendering to Barack Obama's call for tax increases. Republicans are facing an avalanche of pressure from the White House, the media and even many on Wall Street to abandon their antitax principles to avoid a "fiscal cliff."

Mr....