Clapper Lied to Congress, Says Sen. Paul

Watch what you say on the phone, Rand

The pressure on the Obama administration's top intelligence official, James Clapper, increased Tuesday when a popular libertarian US senator said he had lied to Congress and suggested he consider his postion.

"The director of national intelligence, in March, did directly lie to Congress, which is against the law," said Rand Paul, a Kentucky Republican who is considering a 2016 run for president, on CNN Tuesday.

On CNN, Paul came close to saying that Clapper, the director of national intelligence, should step down after Clapper misleadingly told the Senate intelligence committee in March that the National Security Agency did "not wittingly" collect data on Americans' communications. Paul said Clapper would not serve in any administration led by him.