An intruder who jumped a fence at the White House made it further inside the building than the US Secret Service has publicly acknowledged, according to reports.

Security at the White House has been stepped up after a man with a knife jumped the fence and made it into the presidential residence before being tackled.

The sex scandal involving US Secret Service agents and prostitutes in a hotel in Colombia involved at least 20 foreign women, congressional officials say.

The US Congress is to subpoena the White House gatecrashers to reveal how they got into a state dinner without an invitation.

The couple who gatecrashed President Barack Obama’s first state dinner may be subpoenaed to appear before a congressional committee probing the security breach.