Senate Republican Leader Mitch McConnell says the government's eavesdropping powers against suspected foreign terrorists is needed.
McConnell's comments came at a national police conference in Louisville.
He hailed the recently passed update to the Foreign Intelligence Surveillance Act and ridiculed concerns from some critics that the changes went too far.
McConnell drew applause when he said it was not only dangerous, "but the height of stupidity," to extend the Bill of Rights to what he called "a bunch of noncitizens overseas, let alone terrorists."
The legislation that cleared Congress gives the government leeway to intercept without warrants, communications between foreigners that are routed through equipment in this country.