The US Director of National Intelligence James Clapper has said that foreign allies regularly conduct espionage activities against American leaders and intelligence services.
His comments came in response to a series of questions during a hearing before the House of Representatives Intelligence Committee.
Mr Clapper also said spying on foreign leaders was a basic tenet of intelligence operations.
More top news
The loss is a tragedy for this small tight-knit team that dreams of making the trip into space accessible to travellers not just astronauts.
Ryan Bowen had been planning this baby-piloted battle-mech since before his son was born.
President Barack Obama and First Lady Michelle Obama handed out treats at a White House Halloween party.