Ron Hopper of the FBI folds his hands as he speaks at a press conference about the Pulse night club shootings in Orlando, Florida, US, June 20, 2016.[Photo/VCG]

WASHINGTON - US Senate Majority Leader Mitch McConnell set up a vote late on Monday to expand the Federal Bureau of Investigation's authority to use a secretive surveillance order without a warrant to include email metadata and some browsing history information.

The move, made via an amendment to a criminal justice appropriations bill, is an effort to respond to last week's mass shooting in an Orlando nightclub after a series of measures to restrict guns offered by both parties failed on Monday.

"In the wake of the tragic massacre in Orlando, it is important our law enforcement have the tools they need to conduct counterterrorism investigations," Senator John McCain, an Arizona Republican and sponsor of the amendment, said in a statement.

The bill is also supported by Republican Senators John Cornyn, Jeff Sessions and Richard Burr, who chairs the Senate Intelligence Committee.

Privacy advocates denounced the effort, saying it seeks to exploit a mass shooting in order to expand the government's digital spying powers.