Brianna Montalvo (5) holds a sign thanking US President Barack Obama during a rally outside the White House in Washington. Photograph: Jabin Botsford/The New York Times
Q&A: Who is Obama helping?

So what actions did Obama take on immigration on Thursday? He announced executive orders allowing up to five million illegal immigrants to remain in t(...)

 Signs made by attendees hang at the offices of 32BJ SEIU, a workers’ union, during a viewing party for US President Barack Obama’s speech on evecutive action immigration policy reform last night in New York City. Photograph: Kevin Hagen/Getty Images

What did President Obama announce about immigration last night?In a televised address from the White House, Mr Obama announced a series of executive o(...)

Fighting talk: Stewart Baker, former general counsel of the US’s National Security Agency, pulls no punches when talking about whistleblower Edward Snowden and the journalists who worked with him. Photograph: Stephen Lovekin/Getty Images for Guardian News and Media

Stewart Baker is a cheerfully unapologetic apologist for the US’s National Security Agency (NSA). It makes sense that he would be, as he was general c(...)

The medical team who treated Teresa Romero, the Spanish nurse infected with Ebola, (from left) Marta Mora, Marta Arsuaga, José Ramon Arribas and Fernando de la Calle, arrive for a press conference at the Hospital Carlos III in Madrid today. Photograph: Luca Piergiovanni/EPA

The United States has imposed restrictions on all travellers entering from the three west African countries worst affected by the Ebola outbreak, proc(...)

A health worker wearing a protective suit stands near a window at an isolation ward in Madrid’s Carlos III Hospital. Teresa Romero, a nurse infected with Ebola, is showing signs of improvement. Photograph: Paul Hanna/Reuters

A female hospital worker in Texas who treated the first man to die of Ebola in the United States has been diagnosed with the deadly disease, marking t(...)

Passengers queueing at a Transportation Security Administration (TSA) checkpoint at John F. Kennedy International Airport this week. Photograph: Justin Lane/Reuters

Stepped up efforts by the US to halt the spread of the Ebola virus will start at New York’s John F. Kennedy International Airport today, where teams (...)

Walter O’Brien, the son of a Wexford farmer, says he has an IQ of 196. The Irishman’s life is now the subject of Scorpion, a prime-time TV drama in the US.  Photograph:  Lisette M. Azar/CBS via Getty Images

The man with perhaps the fourth-highest IQ ever measured says, “Once your IQ is 150 or over, it stops beings ability and becomes a disability.” Walter(...)

US Secret Service Director Julia Pierson, the first woman to lead the agency, has resigned. Photograph: Kevin Lamarque/Reuters

US Secret Service Director Julia Pierson has resigned following a number of security lapses at the White House. Homeland Security Secretary Jeh Johnso(...)

Members of the Secret Service on the North steps of the White House in Washington yesterday. The man who breached security at the White House this month raced through several rooms on the main floor, penetrating farther into the building than previously disclosed. Photograph: Doug Mills/The New York Times 0:51

The man who breached security at the White House this month raced through several rooms on the main floor, penetrating farther into the building than (...)

The deportation trial was adjourned when Mahmoud Bazzi’s attorney failed to turn up to court on time.

The Lebanese man suspected of involvement in the 1980 abduction and killings of two Irish UN peacekeepers and the shooting of a third has told an Amer(...)