New legislation introduced by Senator Patrick Leahy would rewrite portions of the Patriot Act allowing the government to collect extensive data on citizens.
Leahy says the measure would require greater oversight, transparency, and accountability in connection with the government's domestic surveillance powers.
The push comes following leaked information indicating the government is storing phone logs and emails of millions of Americans not suspected of criminal activity.
Rep. Peter Welch says he'll support his colleague's effort.
"It's time to revisit the Patriot Act, we do have a terrorist challenge, government has to have tools to protect us, but on the other hand, there can be a balance and I think the balance has gone in favor of the government," Welch said.
The changes would force the government to establish a link to an active investigation into a foreign terrorist group or power.