Paul Ryan can add one more burning issue to his agenda as the new Speaker of the US House of Representatives: how to get rid of the stench in his office left behind by predecessor John Boehner.

A man jumped over the White House fence on Wednesday evening and was attacked by Secret Service dogs before being arrested by officers, a Secret Service spokesman said.

Republican lawmakers dragged the Ebola crisis into the political arena on Thursday, ramping up demands that President Obama impose new restrictions on travel from countries ravaged by the deadly virus.

Chinese-backed hackers infiltrated the computer networks of airline, shipping and information technology companies responsible for transporting personnel and weapons for the US military, a Senate committee claims.

A US-led  operation disrupted a crime ring that infected personal computers around the globe with malicious software used for stealing banking credentials and extorting computer owners.

The United States has indications that a toxic chemical, probably chlorine, was used in Syria this month and is examining whether the Syrian government was responsible, the US State Department said on Monday.