It\ufffds amazing what you can find if you turn over a few rocks in the anti-terrorism legislation Congress approved during the election season.

Take, for example, the John W. Warner Defense Authorization Act of 2006, named for the longtime Armed Services Committee chairman from Virginia.

Signed by President Bush on Oct. 17, the law (PL 109-364) has a provocative provision called "Use of the Armed Forces in Major Public Emergencies."

The thrust of it seems to be about giving the federal government a far stronger hand in coordinating responses to Katrina-like disasters.

But on closer inspection, its language also alters the two-centuries-old Insurrection Act, which Congress passed in 1807 to limit the president\ufffds power to deploy troops within the United States.

That law has long allowed the president to mobilize troops only "to suppress, in a State, any insurrection, domestic violence, unlawful combination, or conspiracy."

But the amended law takes the cuffs off.

Specifically, the new language adds "natural disaster, epidemic, or other serious public health emergency, terrorist attack or incident" to the list of conditions permitting the President to take over local authority \ufffd particularly "if domestic violence has occurred to such an extent that the constituted authorities of the State or possession are incapable of maintaining public order."

Since the administration broadened what constitutes "conspiracy" in its definition of enemy combatants \ufffd anyone who "has purposely and materially supported hostilities against the United States," in the language of the Military Commissions Act (PL 109-366) \ufffd critics say it\ufffds a formula for executive branch mischief.

Yet despite such a radical turn, the new law garnered little dissent, or even attention, on the Hill.

One of the few to complain, Sen. Patrick J. Leahy, D-Vt., warned that the measure virtually invites the White House to declare federal martial law.

It "subverts solid, longstanding posse comitatus statutes that limit the military\ufffds involvement in law enforcement, thereby making it easier for the President to declare martial law," he said in remarks submitted to the Congressional Record on Sept. 29.

"The changes to the Insurrection Act will allow the President to use the military, including the National Guard, to carry out law enforcement activities without the consent of a governor," he said.

Moreover, he said, it breaks a long, fundamental tradition of federal restraint.

"Using the military for law enforcement goes against one of the founding tenets of our democracy."

And he criticized the way it was rammed through Congress.

It "was just slipped in the defense bill as a rider with little study," he fumed. "Other congressional committees with jurisdiction over these matters had no chance to comment, let alone hold hearings on, these proposals."